HPC Wiki - User contributions [en]

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-24T14:52:32Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Cluster Structure === 

Which of the following statements are true?

{{hidden begin
|title = "A typical cluster contains a number of nodes, those contain several CPUs, those contain several cores".
}}
<quiz display=simple>
{
|type="()"}
+ True
|| Explanation: Correct
- False
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "In a cluster, each CPU core usually has its own RAM".
}}
<quiz display=simple>
{
|type="()"}
- True
|| Explanation: Wrong
+ False
|| Explanation: Each node usually has its own RAM, which is shared between all its CPUs
</quiz>
{{hidden end}}

{{hidden begin
|title = "Computations are normally started by the user on the login node".
}}
<quiz display=simple>
{
|type="()"}
- True
|| Explanation: Wrong
+ False
|| Explanation: The user puts the job into a queue, and the scheduling system runs them on the compute nodes
</quiz>
{{hidden end}}

=== Short Quiz: Getting Help === 

{{hidden begin
|title = Your SLURM job crashes. What two things should you always attach to the ticket?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| The SLURM job script that caused the error, and the SLURM logfile that contains the error
</quiz>
{{hidden end}}

{{hidden begin
|title = Which of the following is the correct support address for Bender?
}}
<quiz display=simple>
{
|type="()"}
- bender@uni-bonn.de
|| Explanation: Wrong
- bender@hpc.uni-bonn.de
|| Explanation: Wrong
- bender-support@uni-bonn.de
|| Explanation: Wrong
+ bender-support@hpc.uni-bonn.de
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: SSH Directory === 

(Hard to implement because of matching answers)

=== Short Quiz: File Transfer === 

{{hidden begin
|title = You want to copy a directory named myresults, from your home on Bender to your current directory on your PC using an SSH command. Assume you have an SSH preset named <code>bender</code>. What does the command look like? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>scp -r bender:~/myresults . scp -r bender:myresults ./myresults scp -r bender:/home/<MyUsername>/myresults .</code>
</quiz>
{{hidden end}}

=== Short Quiz: Environment Modules === 

(Hard to implement because of matching answers)

=== Short Quiz: SLURM Parameters === 

How many cores will SLURM allocate in each case? Assume that the default number of tasks and CPUs per task are 1, and that there are 32 cores and 4 GPUs per node.

{{hidden begin
|title = <code>sbatch --nodes=2 --ntasks-per-node=16 quiz1.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>32 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch --ntasks=48 --cpus-per-task=2 quiz2.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>96 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch --gpus=1 quiz3</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>8 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch quiz4.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>1 core</code>
</quiz>
{{hidden end}}

=== Short Quiz: Job Configurations === 

What SLURM settings (tasks and CPUs per task) would you pick for the following cases:

{{hidden begin
|title = You want to run a program with 8 threads.
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--ntasks=1 --cpus-per-task=8</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = You want to run 6 instances of a program (you don’t care whether they run on a single node or not).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--ntasks=6</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = You want to run 64 instances of a program, ensuring that they are distributed evenly over 4 nodes.
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--nodes=4 --ntasks-per-node=16</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-24T14:51:06Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Cluster Structure === 

Which of the following statements are true?

{{hidden begin
|title = "A typical cluster contains a number of nodes, those contain several CPUs, those contain several cores".
}}
<quiz display=simple>
{
|type="()"}
+ True
|| Explanation: Correct
- False
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "In a cluster, each CPU core usually has its own RAM".
}}
<quiz display=simple>
{
|type="()"}
- True
|| Explanation: Wrong
+ False
|| Explanation: Each node usually has its own RAM, which is shared between all its CPUs
</quiz>
{{hidden end}}

{{hidden begin
|title = "Computations are normally started by the user on the login node".
}}
<quiz display=simple>
{
|type="()"}
- True
|| Explanation: Wrong
+ False
|| Explanation: The user puts the job into a queue, and the scheduling system runs them on the compute nodes
</quiz>
{{hidden end}}

=== Short Quiz: Getting Help === 

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| The SLURM job script that caused the error, and the SLURM logfile that contains the error
</quiz>
{{hidden end}}

{{hidden begin
|title = Which of the following is the correct support address for Bender?
}}
<quiz display=simple>
{
|type="()"}
- bender@uni-bonn.de
|| Explanation: Wrong
- bender@hpc.uni-bonn.de
|| Explanation: Wrong
- bender-support@uni-bonn.de
|| Explanation: Wrong
+ bender-support@hpc.uni-bonn.de
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: SSH Directory === 

(Hard to implement because of matching answers)

=== Short Quiz: File Transfer === 

{{hidden begin
|title = You want to copy a directory named myresults, from your home on Bender to your current directory on your PC using an SSH command. Assume you have an SSH preset named <code>bender</code>. What does the command look like? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>scp -r bender:~/myresults . scp -r bender:myresults ./myresults scp -r bender:/home/<MyUsername>/myresults .</code>
</quiz>
{{hidden end}}

=== Short Quiz: Environment Modules === 

(Hard to implement because of matching answers)

=== Short Quiz: SLURM Parameters === 

How many cores will SLURM allocate in each case? Assume that the default number of tasks and CPUs per task are 1, and that there are 32 cores and 4 GPUs per node.

{{hidden begin
|title = <code>sbatch --nodes=2 --ntasks-per-node=16 quiz1.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>32 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch --ntasks=48 --cpus-per-task=2 quiz2.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>96 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch --gpus=1 quiz3</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>8 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch quiz4.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>1 core</code>
</quiz>
{{hidden end}}

=== Short Quiz: Job Configurations === 

What SLURM settings (tasks and CPUs per task) would you pick for the following cases:

{{hidden begin
|title = You want to run a program with 8 threads.
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--ntasks=1 --cpus-per-task=8</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = You want to run 6 instances of a program (you don’t care whether they run on a single node or not).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--ntasks=6</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = You want to run 64 instances of a program, ensuring that they are distributed evenly over 4 nodes.
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--nodes=4 --ntasks-per-node=16</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-24T14:50:43Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Cluster Structure === 

Which of the following statements are true?

{{hidden begin
|title = "A typical cluster contains a number of nodes, those contain several CPUs, those contain several cores".
}}
<quiz display=simple>
{
|type="()"}
+ True
|| Explanation: Correct
- False
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "In a cluster, each CPU core usually has its own RAM".
}}
<quiz display=simple>
{
|type="()"}
- True
|| Explanation: Wrong
+ False
|| Explanation: Each node usually has its own RAM, which is shared between all its CPUs
</quiz>
{{hidden end}}

{{hidden begin
|title = "Computations are normally started by the user on the login node".
}}
<quiz display=simple>
{
|type="()"}
- True
|| Explanation: Wrong
+ False
|| Explanation: The user puts the job into a queue, and the scheduling system runs them on the compute nodes
</quiz>
{{hidden end}}

=== Short Quiz: Getting Help === 

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| The SLURM job script that caused the error, and the SLURM logfile that contains the error
</quiz>
{{hidden end}}

{{hidden begin
|title = Which of the following is the correct support address for Bender?
}}
<quiz display=simple>
{
|type="()"}
- bender@uni-bonn.de
|| Explanation: Wrong
- bender@hpc.uni-bonn.de
|| Explanation: Wrong
- bender-support@uni-bonn.de
|| Explanation: Wrong
+ bender-support@hpc.uni-bonn.de
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: SSH Directory === 

(Hard to implement because of matching answers)

=== Short Quiz: File Transfer === 

{{hidden begin
|title = You want to copy a directory named myresults, from your home on Bender to your current directory on your PC using an SSH command. Assume you have an SSH preset named <code>bender</code>. What does the command look like? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>scp -r bender:~/myresults . scp -r bender:myresults ./myresults scp -r bender:/home/<MyUsername>/myresults .</code>
</quiz>
{{hidden end}}

=== Short Quiz: Environment Modules === 

(Hard to implement, maybe click and submit to see the answer?)

=== Short Quiz: SLURM Parameters === 

How many cores will SLURM allocate in each case? Assume that the default number of tasks and CPUs per task are 1, and that there are 32 cores and 4 GPUs per node.

{{hidden begin
|title = <code>sbatch --nodes=2 --ntasks-per-node=16 quiz1.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>32 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch --ntasks=48 --cpus-per-task=2 quiz2.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>96 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch --gpus=1 quiz3</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>8 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch quiz4.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>1 core</code>
</quiz>
{{hidden end}}

=== Short Quiz: Job Configurations === 

What SLURM settings (tasks and CPUs per task) would you pick for the following cases:

{{hidden begin
|title = You want to run a program with 8 threads.
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--ntasks=1 --cpus-per-task=8</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = You want to run 6 instances of a program (you don’t care whether they run on a single node or not).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--ntasks=6</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = You want to run 64 instances of a program, ensuring that they are distributed evenly over 4 nodes.
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--nodes=4 --ntasks-per-node=16</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/version-control-with-git

2026-03-24T13:55:00Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: The Idea Behind Git === 

{{hidden begin
|title = Where is the git repository information located?
}}
<quiz display=simple>
{
|type="()"}
+ Directory at repository top level
|| Explanation: Correct
- Directory inside every directory in the repository
|| Explanation: Wrong
- Directory in your home directory
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = Where are the actual files you edit?
}}
<quiz display=simple>
{
|type="()"}
+ Working tree
|| Explanation: Correct
- Index
|| Explanation: Wrong
- Repository
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = What is the staging area for the next commit called?
}}
<quiz display=simple>
{
|type="()"}
- Working tree
|| Explanation: Wrong
+ Index
|| Explanation: Correct
- Repository
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = Where is the history of commits?
}}
<quiz display=simple>
{
|type="()"}
- Working tree
|| Explanation: Wrong
- Index
|| Explanation: Wrong
+ Repository
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: First Repo and First Commit === 

{{hidden begin
|title = Which of the following statements are true?
}}
<quiz display=simple>
{
|type="[]"}
+ All global git settings will be put into a file named <code>.gitconfig</code> in your home directory.
|| Explanation: True. Specifically: settings will be put into the file in your home with <code>git config --global</code>, or the project-specific one with <code>git config --local</code>.
+ Git needs your name and e-mail address before letting you commit anything
|| Explanation: True
+ Every commit needs a commit message, either via the command line or a text editor
|| Explanation: True
- The command <code>git</code> with no arguments will show a history of your commits.
|| Explanation: False. The command <code>git log</code> will do that.
</quiz>
{{hidden end}}

=== Short Quiz: Handling Remotes === 

{{hidden begin
|title = What is the meaning of cloning in the context of git?
}}
<quiz display=simple>
{
|type="()"}
- Downloading commits and immediately merging them
|| Explanation: Wrong
- Downloading commits from remote
|| Explanation: Wrong
+ Creating a new repository from a remote one
|| Explanation: Correct
- Uploading commits
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = What is the meaning of pulling in the context of git?
}}
<quiz display=simple>
{
|type="()"}
+ Downloading commits and immediately merging them
|| Explanation: Correct
- Downloading commits from remote
|| Explanation: Wrong
- Creating a new repository from a remote one
|| Explanation: Wrong
- Uploading commits
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = What is the meaning of pushing in the context of git?
}}
<quiz display=simple>
{
|type="()"}
- Downloading commits and immediately merging them
|| Explanation: Wrong
- Downloading commits from remote
|| Explanation: Wrong
- Creating a new repository from a remote one
|| Explanation: Wrong
+ Uploading commits
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = What is the meaning of fetching in the context of git?
}}
<quiz display=simple>
{
|type="()"}
- Downloading commits and immediately merging them
|| Explanation: Wrong
+ Downloading commits from remote
|| Explanation: Correct
- Creating a new repository from a remote one
|| Explanation: Wrong
- Uploading commits
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Github Features vs. Git Features === 

{{hidden begin
|title = Which of these is added by Github, so not built into git?
}}
<quiz display=simple>
{
|type="[]"}
- Cloning a Repository
|| Wrong. Built into Git.
+ Forking a Repository
|| Correct. Added by Github.
+ Pull Requests
|| Correct. Added by Github.
- Remote Repositories
|| Wrong. Built into Git.
+ Restricting who can push to main branch
|| Correct. Added by Github.
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/version-control-with-git

2026-03-24T13:53:53Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: The Idea Behind Git === 

{{hidden begin
|title = Where is the git repository information located?
}}
<quiz display=simple>
{
|type="()"}
+ Directory at repository top level
|| Explanation: Correct
- Directory inside every directory in the repository
|| Explanation: Wrong
- Directory in your home directory
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = Where are the actual files you edit?
}}
<quiz display=simple>
{
|type="()"}
+ Working tree
|| Explanation: Correct
- Index
|| Explanation: Wrong
- Repository
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = What is the staging area for the next commit called?
}}
<quiz display=simple>
{
|type="()"}
- Working tree
|| Explanation: Wrong
+ Index
|| Explanation: Correct
- Repository
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = Where is the history of commits?
}}
<quiz display=simple>
{
|type="()"}
- Working tree
|| Explanation: Wrong
- Index
|| Explanation: Wrong
+ Repository
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: First Repo and First Commit === 

{{hidden begin
|title = Which of the following statements are true?
}}
<quiz display=simple>
{
|type="[]"}
+ All global git settings will be put into a file named <code>.gitconfig</code> in your home directory.
|| Explanation: True. Specifically: settings will be put into the file in your home with <code>git config --global</code>, or the project-specific one with <code>git config --local</code>.
+ Git needs your name and e-mail address before letting you commit anything
|| Explanation: True
+ Every commit needs a commit message, either via the command line or a text editor
|| Explanation: True
- The command <code>git</code> with no arguments will show a history of your commits.
|| Explanation: False. The command <code>git log</code> will do that.
</quiz>
{{hidden end}}

=== Short Quiz: Handling Remotes === 

{{hidden begin
|title = What is the meaning of cloning in the context of git?
}}
<quiz display=simple>
{
|type="()"}
- Downloading commits and immediately merging them
|| Explanation: Wrong
- Downloading commits from remote
|| Explanation: Wrong
+ Creating a new repository from a remote one
|| Explanation: Correct
- Uploading commits
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = What is the meaning of pulling in the context of git?
}}
<quiz display=simple>
{
|type="()"}
+ Downloading commits and immediately merging them
|| Explanation: Correct
- Downloading commits from remote
|| Explanation: Wrong
- Creating a new repository from a remote one
|| Explanation: Wrong
- Uploading commits
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = What is the meaning of pushing in the context of git?
}}
<quiz display=simple>
{
|type="()"}
- Downloading commits and immediately merging them
|| Explanation: Wrong
- Downloading commits from remote
|| Explanation: Wrong
- Creating a new repository from a remote one
|| Explanation: Wrong
+ Uploading commits
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = What is the meaning of fetching in the context of git?
}}
<quiz display=simple>
{
|type="()"}
- Downloading commits and immediately merging them
|| Explanation: Wrong
+ Downloading commits from remote
|| Explanation: Correct
- Creating a new repository from a remote one
|| Explanation: Wrong
- Uploading commits
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Github Features vs. Git Features === 

{{hidden begin
|title = Which of these is added by Github, so not built into git?
}}
<quiz display=simple>
{
|type="[]"}
- Cloning a Repository
|| Explanation: Wrong. Built into Git.
+ Forking a Repository
|| Explanation: Correct. Added by Github.
+ Pull Requests
|| Explanation: Correct. Added by Github.
- Remote Repositories
|| Explanation: Wrong. Built into Git.
+ Restricting who can push to main branch
|| Explanation: Correct. Added by Github.
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/version-control-with-git

2026-03-24T13:46:14Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/version-control-with-git

2026-03-24T13:38:57Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/version-control-with-git

2026-03-24T13:31:54Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/version-control-with-git

2026-03-24T13:21:27Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-19T13:58:51Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Cluster Structure === 

Which of the following statements are true?

{{hidden begin
|title = "A typical cluster contains a number of nodes, those contain several CPUs, those contain several cores".
}}
<quiz display=simple>
{
|type="()"}
+ True
|| Explanation: Correct
- False
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "In a cluster, each CPU core usually has its own RAM".
}}
<quiz display=simple>
{
|type="()"}
- True
|| Explanation: Wrong
+ False
|| Explanation: Each node usually has its own RAM, which is shared between all its CPUs
</quiz>
{{hidden end}}

{{hidden begin
|title = "Computations are normally started by the user on the login node".
}}
<quiz display=simple>
{
|type="()"}
- True
|| Explanation: Wrong
+ False
|| Explanation: The user puts the job into a queue, and the scheduling system runs them on the compute nodes
</quiz>
{{hidden end}}

=== Short Quiz: Getting Help === 

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| The SLURM job script that caused the error, and the SLURM logfile that contains the error
</quiz>
{{hidden end}}

{{hidden begin
|title = Which of the following is the correct support address for Bender?
}}
<quiz display=simple>
{
|type="()"}
- bender@uni-bonn.de
|| Explanation: Wrong
- bender@hpc.uni-bonn.de
|| Explanation: Wrong
- bender-support@uni-bonn.de
|| Explanation: Wrong
+ bender-support@hpc.uni-bonn.de
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: SSH Directory === 

(Hard to implement, maybe click and submit to see the answer?)

=== Short Quiz: File Transfer === 

{{hidden begin
|title = You want to copy a directory named myresults, from your home on Bender to your current directory on your PC using an SSH command. Assume you have an SSH preset named <code>bender</code>. What does the command look like? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>scp -r bender:~/myresults . scp -r bender:myresults ./myresults scp -r bender:/home/<MyUsername>/myresults .</code>
</quiz>
{{hidden end}}

=== Short Quiz: Environment Modules === 

(Hard to implement, maybe click and submit to see the answer?)

=== Short Quiz: SLURM Parameters === 

How many cores will SLURM allocate in each case? Assume that the default number of tasks and CPUs per task are 1, and that there are 32 cores and 4 GPUs per node.

{{hidden begin
|title = <code>sbatch --nodes=2 --ntasks-per-node=16 quiz1.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>32 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch --ntasks=48 --cpus-per-task=2 quiz2.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>96 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch --gpus=1 quiz3</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>8 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch quiz4.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>1 core</code>
</quiz>
{{hidden end}}

=== Short Quiz: Job Configurations === 

What SLURM settings (tasks and CPUs per task) would you pick for the following cases:

{{hidden begin
|title = You want to run a program with 8 threads.
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--ntasks=1 --cpus-per-task=8</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = You want to run 6 instances of a program (you don’t care whether they run on a single node or not).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--ntasks=6</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = You want to run 64 instances of a program, ensuring that they are distributed evenly over 4 nodes.
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>--nodes=4 --ntasks-per-node=16</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-19T13:47:09Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Cluster Structure === 

Which of the following statements are true?

{{hidden begin
|title = "A typical cluster contains a number of nodes, those contain several CPUs, those contain several cores".
}}
<quiz display=simple>
{
|type="()"}
+ True
|| Explanation: Correct
- False
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "In a cluster, each CPU core usually has its own RAM".
}}
<quiz display=simple>
{
|type="()"}
- True
|| Explanation: Wrong
+ False
|| Explanation: Each node usually has its own RAM, which is shared between all its CPUs
</quiz>
{{hidden end}}

{{hidden begin
|title = "Computations are normally started by the user on the login node".
}}
<quiz display=simple>
{
|type="()"}
- True
|| Explanation: Wrong
+ False
|| Explanation: The user puts the job into a queue, and the scheduling system runs them on the compute nodes
</quiz>
{{hidden end}}

=== Short Quiz: Getting Help === 

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| The SLURM job script that caused the error, and the SLURM logfile that contains the error
</quiz>
{{hidden end}}

{{hidden begin
|title = Which of the following is the correct support address for Bender?
}}
<quiz display=simple>
{
|type="()"}
- bender@uni-bonn.de
|| Explanation: Wrong
- bender@hpc.uni-bonn.de
|| Explanation: Wrong
- bender-support@uni-bonn.de
|| Explanation: Wrong
+ bender-support@hpc.uni-bonn.de
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: SSH Directory === 

(Hard to implement, maybe click and submit to see the answer?)

=== Short Quiz: File Transfer === 

{{hidden begin
|title = You want to copy a directory named myresults, from your home on Bender to your current directory on your PC using an SSH command. Assume you have an SSH preset named <code>bender</code>. What does the command look like? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>scp -r bender:~/myresults . scp -r bender:myresults ./myresults scp -r bender:/home/<MyUsername>/myresults .</code>
</quiz>
{{hidden end}}

=== Short Quiz: Environment Modules === 

(Hard to implement, maybe click and submit to see the answer?)

=== Short Quiz: SLURM Parameters === 

How many cores will SLURM allocate in each case? Assume that the default number of tasks and CPUs per task are 1, and that there are 32 cores and 4 GPUs per node.

{{hidden begin
|title = <code>sbatch --nodes=2 --ntasks-per-node=16 quiz1.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>32 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch --ntasks=48 --cpus-per-task=2 quiz2.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>96 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch --gpus=1 quiz3</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>8 cores</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>sbatch quiz4.sh</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>1 core</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-19T13:38:11Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-19T13:32:56Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-19T13:32:34Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-18T14:46:07Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-18T14:42:46Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-working-on-hpc-clusters

2026-03-18T14:35:57Z

Praveer-mathur-9f3d@uni-bonn.de: Created page with "Test Edit"

Test Edit

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-18T14:35:47Z

Praveer-mathur-9f3d@uni-bonn.de:

[[/intro-to-programming-with-python]]

[[/python-on-hpc]]

[[/version-control-with-git]]

[[/intro-to-working-on-hpc-clusters]]

User:Praveer-mathur-9f3d@uni-bonn.de/version-control-with-git

2026-03-18T14:08:40Z

Praveer-mathur-9f3d@uni-bonn.de: Created page with "Test Edit"

Test Edit

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-18T14:08:25Z

Praveer-mathur-9f3d@uni-bonn.de:

[[/intro-to-programming-with-python]]

[[/python-on-hpc]]

[[/version-control-with-git]]

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-18T14:07:02Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Python Packages === 

{{hidden begin
|title = Which of these locations will Python search for packages by default?
}}
<quiz display=simple>
{
|type="[]"}
+ Anything that is in $PYTHONPATH
|| Explanation: Correct
- Anything in your home
|| Explanation: Wrong
+ Preconfigured Site Packages
|| Explanation: Correct
+ The current working directory
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Virtual Environments === 

{{hidden begin
|title = Which of the following statements is true?
}}
<quiz display=simple>
{
|type="[]"}
+ venv comes with Python
|| Explanation: Correct
- Virtual environments always go to ~/.virtualenvs
|| Explanation: Wrong
- Each virtual env always has its own Python instance
|| Explanation: Wrong
+ The activate script has to be source-d to activate the venv
|| Explanation: Correct
- The deactivate script has to be source-d to deactivate the venv
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Conda vs. Pip === 
To which package manager do the statements apply? pip, conda, neither or both?
{{hidden begin
|title = "Non-Python packages available by default"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
+ Both of them
|| Explanation: Conda better, but arguably both.
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Tightly integrated with its own virtual environment feature"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
+ Conda
|| Explanation: Correct
- Both of them
|| Explanation: Wrong
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Built-in third-party package repositories"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
+ Conda
|| Explanation: Correct
- Both of them
|| Explanation: Wrong
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Installs new Python executable into env by default"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
- Both of them
|| Explanation: Wrong
+ Neither of them
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = "Automatically installs dependencies for requested package"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
+ Both of them
|| Explanation: Correct
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Requires you to specify package version"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
- Both of them
|| Explanation: Wrong
+ Neither of them
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Arrays and Performance === 

{{hidden begin
|title = What should you always do before you optimize your code's performance? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Measure your code's performance!
</quiz>
{{hidden end}}

=== Short Quiz: Array Memory Layout === 

{{hidden begin
|title = Which index varies fastest in a row-major layout, which varies fastest in a
column-major layout? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Row-major: last index, column-major: first index
</quiz>
{{hidden end}}

{{hidden begin
|title = Which ordering do NumPy arrays have by default? More than one answer
may be correct.
}}
<quiz display=simple>
{
|type="[]"}
+ C order
|| Explanation: Correct
- Fortran order
|| Explanation: Wrong
- Column-major
|| Explanation: Wrong
+ Row-major
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Array Shapes, Broadcasting === 

Consider the following code. What does each print statement output? Could be an error. Treat all print statements independently. (Hard to implement)

<code>x = np.zeros(5) y = np.zeros((3, 5)) z = np.zeros((5, 3, 1))</code>

{{hidden begin
|title = <code>print((x + y).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((x + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(5, 3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(5, 3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(y[:2, :2].shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(2, 2)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(y[:2].shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(2, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y[:2] + x[:2]).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>ValueError: [...] shapes (2, 5) (2,)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y[..., np.newaxis] + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>ValueError: [...] shapes (3, 5, 1) (5, 3, 1)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y.ravel() + x[0]).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(15,)</code>
</quiz>
{{hidden end}}

=== Short Quiz: Advanced Indexing === 

Consider the following code. What does each print statement output? Could be an error. Treat all print statements independently. (Hard to implement)

<code>a = np.array([[1, 2, 3] [4, 5, 6]]) idx = np.array([0, 0]) mask = np.array([False, True, True])</code>

{{hidden begin
|title = <code>print(a[idx])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, 2, 3], [1, 2, 3]]</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(a[:, idx])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, 1], [4, 4]]</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(a[idx, :])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, 2, 3], [1, 2, 3]]</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>a[:, mask] = -1 print(a)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, -1, -1], [4, -1, -1]]</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-18T14:06:44Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Python Packages === 

{{hidden begin
|title = Which of these locations will Python search for packages by default?
}}
<quiz display=simple>
{
|type="[]"}
+ Anything that is in $PYTHONPATH
|| Explanation: Correct
- Anything in your home
|| Explanation: Wrong
+ Preconfigured Site Packages
|| Explanation: Correct
+ The current working directory
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Virtual Environments === 

{{hidden begin
|title = Which of the following statements is true?
}}
<quiz display=simple>
{
|type="[]"}
+ venv comes with Python
|| Explanation: Correct
- Virtual environments always go to ~/.virtualenvs
|| Explanation: Wrong
- Each virtual env always has its own Python instance
|| Explanation: Wrong
+ The activate script has to be source-d to activate the venv
|| Explanation: Correct
- The deactivate script has to be source-d to deactivate the venv
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Conda vs. Pip === 
To which package manager do the statements apply? pip, conda, neither or both?
{{hidden begin
|title = "Non-Python packages available by default"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
+ Both of them
|| Explanation: Conda better, but arguably both.
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Tightly integrated with its own virtual environment feature"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
+ Conda
|| Explanation: Correct
- Both of them
|| Explanation: Wrong
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Built-in third-party package repositories"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
+ Conda
|| Explanation: Correct
- Both of them
|| Explanation: Wrong
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Installs new Python executable into env by default"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
- Both of them
|| Explanation: Wrong
+ Neither of them
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = "Automatically installs dependencies for requested package"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
+ Both of them
|| Explanation: Correct
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Requires you to specify package version"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
- Both of them
|| Explanation: Wrong
+ Neither of them
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Arrays and Performance === 

{{hidden begin
|title = What should you always do before you optimize your code's performance? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Measure your code's performance!
</quiz>
{{hidden end}}

=== Short Quiz: Array Memory Layout === 

{{hidden begin
|title = Which index varies fastest in a row-major layout, which varies fastest in a
column-major layout? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Row-major: last index, column-major: first index
</quiz>
{{hidden end}}

{{hidden begin
|title = Which ordering do NumPy arrays have by default? More than one answer
may be correct.
}}
<quiz display=simple>
{
|type="[]"}
+ C order
|| Explanation: Correct
- Fortran order
|| Explanation: Wrong
- Column-major
|| Explanation: Wrong
+ Row-major
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Array Shapes, Broadcasting === 

Consider the following code. What does each print statement output? Could be an error. Treat all print statements independently. (Hard to implement)

<code>x = np.zeros(5) y = np.zeros((3, 5)) z = np.zeros((5, 3, 1))</code>

{{hidden begin
|title = <code>print((x + y).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((x + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(5, 3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(5, 3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(y[:2, :2].shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(2, 2)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(y[:2].shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(2, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y[:2] + x[:2]).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>ValueError: [...] shapes (2, 5) (2,)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y[..., np.newaxis] + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>ValueError: [...] shapes (3, 5, 1) (5, 3, 1)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y.ravel() + x[0]).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(15,)</code>
</quiz>
{{hidden end}}

=== Short Quiz: Advanced Indexing === 

Consider the following code. What does each print statement output? Could be an error. Treat all print statements independently.

<code>a = np.array([[1, 2, 3] [4, 5, 6]]) idx = np.array([0, 0]) mask = np.array([False, True, True])</code>

{{hidden begin
|title = <code>print(a[idx])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, 2, 3], [1, 2, 3]]</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(a[:, idx])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, 1], [4, 4]]</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(a[idx, :])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, 2, 3], [1, 2, 3]]</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>a[:, mask] = -1 print(a)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, -1, -1], [4, -1, -1]]</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-18T14:06:02Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Python Packages === 

{{hidden begin
|title = Which of these locations will Python search for packages by default?
}}
<quiz display=simple>
{
|type="[]"}
+ Anything that is in $PYTHONPATH
|| Explanation: Correct
- Anything in your home
|| Explanation: Wrong
+ Preconfigured Site Packages
|| Explanation: Correct
+ The current working directory
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Virtual Environments === 

{{hidden begin
|title = Which of the following statements is true?
}}
<quiz display=simple>
{
|type="[]"}
+ venv comes with Python
|| Explanation: Correct
- Virtual environments always go to ~/.virtualenvs
|| Explanation: Wrong
- Each virtual env always has its own Python instance
|| Explanation: Wrong
+ The activate script has to be source-d to activate the venv
|| Explanation: Correct
- The deactivate script has to be source-d to deactivate the venv
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Conda vs. Pip === 
To which package manager do the statements apply? pip, conda, neither or both?
{{hidden begin
|title = "Non-Python packages available by default"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
+ Both of them
|| Explanation: Conda better, but arguably both.
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Tightly integrated with its own virtual environment feature"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
+ Conda
|| Explanation: Correct
- Both of them
|| Explanation: Wrong
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Built-in third-party package repositories"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
+ Conda
|| Explanation: Correct
- Both of them
|| Explanation: Wrong
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Installs new Python executable into env by default"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
- Both of them
|| Explanation: Wrong
+ Neither of them
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = "Automatically installs dependencies for requested package"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
+ Both of them
|| Explanation: Correct
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Requires you to specify package version"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
- Both of them
|| Explanation: Wrong
+ Neither of them
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Arrays and Performance === 

{{hidden begin
|title = What should you always do before you optimize your code's performance? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Measure your code's performance!
</quiz>
{{hidden end}}

=== Short Quiz: Array Memory Layout === 

{{hidden begin
|title = Which index varies fastest in a row-major layout, which varies fastest in a
column-major layout? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Row-major: last index, column-major: first index
</quiz>
{{hidden end}}

{{hidden begin
|title = Which ordering do NumPy arrays have by default? More than one answer
may be correct.
}}
<quiz display=simple>
{
|type="[]"}
+ C order
|| Explanation: Correct
- Fortran order
|| Explanation: Wrong
- Column-major
|| Explanation: Wrong
+ Row-major
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Array Shapes, Broadcasting === 

Consider the following code. What does each print statement output? Could be an error. Treat all print statements independently.

<code>x = np.zeros(5) y = np.zeros((3, 5)) z = np.zeros((5, 3, 1))</code>

{{hidden begin
|title = <code>print((x + y).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((x + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(5, 3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(5, 3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(y[:2, :2].shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(2, 2)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(y[:2].shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(2, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y[:2] + x[:2]).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>ValueError: [...] shapes (2, 5) (2,)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y[..., np.newaxis] + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>ValueError: [...] shapes (3, 5, 1) (5, 3, 1)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y.ravel() + x[0]).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(15,)</code>
</quiz>
{{hidden end}}

=== Short Quiz: Advanced Indexing === 

Consider the following code. What does each print statement output? Could be an error. Treat all print statements independently.

<code>a = np.array([[1, 2, 3] [4, 5, 6]]) idx = np.array([0, 0]) mask = np.array([False, True, True])</code>

{{hidden begin
|title = <code>print(a[idx])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, 2, 3], [1, 2, 3]]</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(a[:, idx])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, 1], [4, 4]]</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(a[idx, :])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, 2, 3], [1, 2, 3]]</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>a[:, mask] = -1 print(a)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>[[1, -1, -1], [4, -1, -1]]</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-18T13:57:52Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Python Packages === 

{{hidden begin
|title = Which of these locations will Python search for packages by default?
}}
<quiz display=simple>
{
|type="[]"}
+ Anything that is in $PYTHONPATH
|| Explanation: Correct
- Anything in your home
|| Explanation: Wrong
+ Preconfigured Site Packages
|| Explanation: Correct
+ The current working directory
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Virtual Environments === 

{{hidden begin
|title = Which of the following statements is true?
}}
<quiz display=simple>
{
|type="[]"}
+ venv comes with Python
|| Explanation: Correct
- Virtual environments always go to ~/.virtualenvs
|| Explanation: Wrong
- Each virtual env always has its own Python instance
|| Explanation: Wrong
+ The activate script has to be source-d to activate the venv
|| Explanation: Correct
- The deactivate script has to be source-d to deactivate the venv
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Conda vs. Pip === 
To which package manager do the statements apply? pip, conda, neither or both?
{{hidden begin
|title = "Non-Python packages available by default"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
+ Both of them
|| Explanation: Conda better, but arguably both.
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Tightly integrated with its own virtual environment feature"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
+ Conda
|| Explanation: Correct
- Both of them
|| Explanation: Wrong
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Built-in third-party package repositories"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
+ Conda
|| Explanation: Correct
- Both of them
|| Explanation: Wrong
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Installs new Python executable into env by default"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
- Both of them
|| Explanation: Wrong
+ Neither of them
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = "Automatically installs dependencies for requested package"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
+ Both of them
|| Explanation: Correct
- Neither of them
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = "Requires you to specify package version"
}}
<quiz display=simple>
{
|type="()"}
- Pip
|| Explanation: Wrong
- Conda
|| Explanation: Wrong
- Both of them
|| Explanation: Wrong
+ Neither of them
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Arrays and Performance === 

{{hidden begin
|title = What should you always do before you optimize your code's performance? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Measure your code's performance!
</quiz>
{{hidden end}}

=== Short Quiz: Array Memory Layout === 

{{hidden begin
|title = Which index varies fastest in a row-major layout, which varies fastest in a
column-major layout? (Hard to implement).
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Row-major: last index, column-major: first index
</quiz>
{{hidden end}}

{{hidden begin
|title = Which ordering do NumPy arrays have by default? More than one answer
may be correct.
}}
<quiz display=simple>
{
|type="[]"}
+ C order
|| Explanation: Correct
- Fortran order
|| Explanation: Wrong
- Column-major
|| Explanation: Wrong
+ Row-major
|| Explanation: Correct
</quiz>
{{hidden end}}

=== Short Quiz: Array Shapes, Broadcasting === 

Consider the following code. What does each print statement output? Could be an error. Treat all print statements independently.

<code>x = np.zeros(5) y = np.zeros((3, 5) z = np.zeros((5, 3, 1))</code>

{{hidden begin
|title = <code>print((x + y).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((x + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(5, 3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(5, 3, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(y[:2, :2].shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(2, 2)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(y[:2].shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(2, 5)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y[:2] + x[:2]).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>ValueError: [...] shapes (2, 5) (2,)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y[..., np.newaxis] + z).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>ValueError: [...] shapes (3, 5, 1) (5, 3, 1)</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print((y.ravel() + x[0]).shape)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>(15,)</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-17T13:02:14Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-17T12:52:46Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-17T12:49:42Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-17T12:45:42Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-17T12:45:06Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-17T12:42:32Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-17T12:35:08Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-17T12:30:09Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-17T12:27:51Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Python Packages === 

{{hidden begin
|title = Which of these locations will Python search for packages by default?
}}
<quiz display=simple>
{
|type="()"}
+ Anything that is in $PYTHONPATH
|| Explanation: Correct
- Anything in your home
|| Explanation: Wrong
+ Preconfigured Site Packages
|| Explanation: Correct
+ The current working directory
|| Explanation: Correct
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-programming-with-python

2026-03-17T12:21:24Z

Praveer-mathur-9f3d@uni-bonn.de: Created page with "=== Short Quiz: Variable Assignment ===  What values do the two variables "mass" and "age" have in the following lines? {{hidden begin |title = <code>mass = 47...."

=== Short Quiz: Variable Assignment === 

What values do the two variables "mass" and "age" have in the following lines?

{{hidden begin
|title = <code>mass = 47.5 print(mass)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = 122 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = age - 20 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 102</code>
</quiz>
{{hidden end}}

=== Short Quiz: Data Types === 

{{hidden begin
|title = <code>planet = 'Earth'</code> What datatype does the variable planet have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
+ String
|| Explanation: Correct
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>apples = 5</code> What datatype does the variable apples have?
}}
<quiz display=simple>
{
|type="()"}
+ Integer
|| Explanation: Correct
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>distance = 10.5</code> What datatype does the variable distance have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
+ Float
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>false = 7 > 2</code> What datatype does the variable false have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
+ Boolean
|| Explanation: Correct
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Boolean Operations === 

<code>var1 = True var2 = False</code>
What is the value of each variable after each of the following print statements?

{{hidden begin
|title = <code>print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True False</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var2 = var1 or var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = var1 and not var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>False True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = not(var1 and not var1) print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

=== Short Quiz: String Concatenation === 

<code>str1 = "Uni" str2 = "Bonn" str3 = str2 + str1 str4 = str1 * 3</code>

{{hidden begin
|title = What output do you expect after doing <code>print(str3)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>BonnUni</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = What output do you expect after doing <code>print(str4)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>UniUniUni</code>
</quiz>
{{hidden end}}

=== Short Quiz: Containers === 

Read the following code:

<code>uni = {"departments": ["physics", "chemistry"], "employees": 4000, "campuses": ("Poppelsdorf", "Endenich"),}</code>

What do the following lines print? Keep in mind that the lines could also give an error output.

{{hidden begin
|title = <code>print(uni[0])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>KeyError: 0</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["departments"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>physics</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["employees"] = 5000</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Nothing
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0] = "Innenstadt"</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>TypeError: 'tuple' object does not support item assignment</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Poppelsdorf</code>
</quiz>
{{hidden end}}

=== Short Quiz: Understanding if Statements === 

Which of the following statements would get printed?

{{hidden begin
|title = <code>if <nowiki>''</nowiki>: print('empty string is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 'word': print('word is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if []: print('empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if [1, 2, 3]: print('non-empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 0: print('zero is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 1: print('one is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Understanding for Loops === 

{{hidden begin
|title = Consider the following Python code: <code>numbers = [5, 8, -3, 6, 0, -2] summed = 0 for num in numbers:     if num < 0:         continue     summed = summed + num     print(summed)</code> 

What does the output look like after the loop is done running?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>5 13 19 19</code>
</quiz>
{{hidden end}}

=== Short Quiz: Mutability === 

Will the following lines work or result in an error?

{{hidden begin
|title = <code>numbers = [5, 8, -3, 6, 0, -2] numbers[3] = 1</code>
}}
<quiz display=simple>
{
|type="()"}
+ Will work
|| Explanation: Lists are mutable
- Will result in an error
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>string = "banana" string[0] = "c"</code>
}}
<quiz display=simple>
{
|type="()"}
- Will work
|| Explanation: Wrong
+ Will result in an error
|| Explanation: Strings are not mutable
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>languages = ("python", "C", "Fortran") languages[1] = "C++"</code>
}}
<quiz display=simple>
{
|type="()"}
- Will work
|| Explanation: Wrong
+ Will result in an error
|| Explanation: Tuples are not mutable
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>alice = {"first_name": "Alice", "age": 32} alice["age"] = 33</code>
}}
<quiz display=simple>
{
|type="()"}
+ Will work
|| Explanation: Dictionaries are mutable
- Will result in an error
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Understanding Slicing === 

What will the following statements print?

{{hidden begin
|title = <code>string = "Uni Bonn" print(string[5])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>o</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>string = "Uni Bonn" print(string[0:2])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Un</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>string = "Uni Bonn" print(string[5:])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>onn</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-17T12:21:12Z

Praveer-mathur-9f3d@uni-bonn.de:

[[/intro-to-programming-with-python]]

[[/python-on-hpc]]

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-17T12:19:56Z

Praveer-mathur-9f3d@uni-bonn.de:

[[/python-on-hpc]]

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-17T12:19:44Z

Praveer-mathur-9f3d@uni-bonn.de:

[[python-on-hpc]]

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-17T12:19:30Z

Praveer-mathur-9f3d@uni-bonn.de: Replaced content with "/python-on-hpc"

[[/python-on-hpc]]

User:Praveer-mathur-9f3d@uni-bonn.de/python-on-hpc

2026-03-17T12:13:13Z

Praveer-mathur-9f3d@uni-bonn.de: Created page with "Test Subpage"

Test Subpage

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-10T13:42:54Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-10T13:40:47Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Variable Assignment === 

What values do the two variables "mass" and "age" have in the following lines?

{{hidden begin
|title = <code>mass = 47.5 print(mass)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = 122 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = age - 20 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 102</code>
</quiz>
{{hidden end}}

=== Short Quiz: Data Types === 

{{hidden begin
|title = <code>planet = 'Earth'</code> What datatype does the variable planet have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
+ String
|| Explanation: Correct
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>apples = 5</code> What datatype does the variable apples have?
}}
<quiz display=simple>
{
|type="()"}
+ Integer
|| Explanation: Correct
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>distance = 10.5</code> What datatype does the variable distance have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
+ Float
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>false = 7 > 2</code> What datatype does the variable false have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
+ Boolean
|| Explanation: Correct
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Boolean Operations === 

<code>var1 = True var2 = False</code>
What is the value of each variable after each of the following print statements?

{{hidden begin
|title = <code>print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True False</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var2 = var1 or var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = var1 and not var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>False True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = not(var1 and not var1) print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

=== Short Quiz: String Concatenation === 

<code>str1 = "Uni" str2 = "Bonn" str3 = str2 + str1 str4 = str1 * 3</code>

{{hidden begin
|title = What output do you expect after doing <code>print(str3)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>BonnUni</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = What output do you expect after doing <code>print(str4)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>UniUniUni</code>
</quiz>
{{hidden end}}

=== Short Quiz: Containers === 

Read the following code:

<code>uni = {"departments": ["physics", "chemistry"], "employees": 4000, "campuses": ("Poppelsdorf", "Endenich"),}</code>

What do the following lines print? Keep in mind that the lines could also give an error output.

{{hidden begin
|title = <code>print(uni[0])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>KeyError: 0</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["departments"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>physics</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["employees"] = 5000</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Nothing
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0] = "Innenstadt"</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>TypeError: 'tuple' object does not support item assignment</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Poppelsdorf</code>
</quiz>
{{hidden end}}

=== Short Quiz: Understanding if Statements === 

Which of the following statements would get printed?

{{hidden begin
|title = <code>if <nowiki>''</nowiki>: print('empty string is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 'word': print('word is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if []: print('empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if [1, 2, 3]: print('non-empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 0: print('zero is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 1: print('one is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Understanding for Loops === 

{{hidden begin
|title = Consider the following Python code: <code>numbers = [5, 8, -3, 6, 0, -2] summed = 0 for num in numbers:     if num < 0:         continue     summed = summed + num     print(summed)</code> 

What does the output look like after the loop is done running?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>5 13 19 19</code>
</quiz>
{{hidden end}}

=== Short Quiz: Mutability === 

Will the following lines work or result in an error?

{{hidden begin
|title = <code>numbers = [5, 8, -3, 6, 0, -2] numbers[3] = 1</code>
}}
<quiz display=simple>
{
|type="()"}
+ Will work
|| Explanation: Lists are mutable
- Will result in an error
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>string = "banana" string[0] = "c"</code>
}}
<quiz display=simple>
{
|type="()"}
- Will work
|| Explanation: Wrong
+ Will result in an error
|| Explanation: Strings are not mutable
</quiz>

{{hidden begin
|title = <code>languages = ("python", "C", "Fortran") languages[1] = "C++"</code>
}}
<quiz display=simple>
{
|type="()"}
- Will work
|| Explanation: Wrong
+ Will result in an error
|| Explanation: Tuples are not mutable
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>alice = {"first_name": "Alice", "age": 32} alice["age"] = 33</code>
}}
<quiz display=simple>
{
|type="()"}
+ Will work
|| Explanation: Dictionaries are mutable
- Will result in an error
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Understanding Slicing === 

What will the following statements print?

{{hidden begin
|title = <code>string = "Uni Bonn" print(string[5])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>o</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>string = "Uni Bonn" print(string[0:2])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Un</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>string = "Uni Bonn" print(string[5:])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>onn</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-10T13:34:29Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Variable Assignment === 

What values do the two variables "mass" and "age" have in the following lines?

{{hidden begin
|title = <code>mass = 47.5 print(mass)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = 122 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = age - 20 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 102</code>
</quiz>
{{hidden end}}

=== Short Quiz: Data Types === 

{{hidden begin
|title = <code>planet = 'Earth'</code> What datatype does the variable planet have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
+ String
|| Explanation: Correct
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>apples = 5</code> What datatype does the variable apples have?
}}
<quiz display=simple>
{
|type="()"}
+ Integer
|| Explanation: Correct
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>distance = 10.5</code> What datatype does the variable distance have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
+ Float
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>false = 7 > 2</code> What datatype does the variable false have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
+ Boolean
|| Explanation: Correct
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Boolean Operations === 

<code>var1 = True var2 = False</code>
What is the value of each variable after each of the following print statements?

{{hidden begin
|title = <code>print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True False</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var2 = var1 or var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = var1 and not var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>False True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = not(var1 and not var1) print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

=== Short Quiz: String Concatenation === 

<code>str1 = "Uni" str2 = "Bonn" str3 = str2 + str1 str4 = str1 * 3</code>

{{hidden begin
|title = What output do you expect after doing <code>print(str3)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>BonnUni</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = What output do you expect after doing <code>print(str4)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>UniUniUni</code>
</quiz>
{{hidden end}}

=== Short Quiz: Containers === 

Read the following code:

<code>uni = {"departments": ["physics", "chemistry"], "employees": 4000, "campuses": ("Poppelsdorf", "Endenich"),}</code>

What do the following lines print? Keep in mind that the lines could also give an error output.

{{hidden begin
|title = <code>print(uni[0])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>KeyError: 0</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["departments"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>physics</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["employees"] = 5000</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Nothing
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0] = "Innenstadt"</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>TypeError: 'tuple' object does not support item assignment</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Poppelsdorf</code>
</quiz>
{{hidden end}}

=== Short Quiz: Understanding if Statements === 

Which of the following statements would get printed?

{{hidden begin
|title = <code>if <nowiki>''</nowiki>: print('empty string is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 'word': print('word is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if []: print('empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if [1, 2, 3]: print('non-empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 0: print('zero is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 1: print('one is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Understanding for Loops === 

{{hidden begin
|title = Consider the following Python code: <code>numbers = [5, 8, -3, 6, 0, -2] summed = 0 for num in numbers:     if num < 0:         continue     summed = summed + num     print(summed)</code> 

What does the output look like after the loop is done running?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>5 13 19 19</code>
</quiz>
{{hidden end}}

=== Short Quiz: Mutability === 

Will the following lines work or result in an error?

{{hidden begin
|title = <code>numbers = [5, 8, -3, 6, 0, -2] numbers[3] = 1</code>
}}
<quiz display=simple>
{
|type="()"}
+ Will work
|| Explanation: Lists are mutable
- Will result in an error
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>string = "banana" string[0] = "c"</code>
}}
<quiz display=simple>
{
|type="()"}
- Will work
|| Explanation: Wrong
+ Will result in an error
|| Explanation: Strings are not mutable
</quiz>

{{hidden begin
|title = <code>languages = ("python", "C", "Fortran") languages[1] = "C++"</code>
}}
<quiz display=simple>
{
|type="()"}
- Will work
|| Explanation: Wrong
+ Will result in an error
|| Explanation: Tuples are not mutable
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>alice = {"first_name": "Alice", "age": 32} alice["age"] = 33</code>
}}
<quiz display=simple>
{
|type="()"}
+ Will work
|| Explanation: Dictionaries are mutable
- Will result in an error
|| Explanation: Wrong
</quiz>
{{hidden end}}
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-09T16:58:09Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-09T16:57:58Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Variable Assignment === 

What values do the two variables "mass" and "age" have in the following lines?

{{hidden begin
|title = <code>mass = 47.5 print(mass)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = 122 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = age - 20 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 102</code>
</quiz>
{{hidden end}}

=== Short Quiz: Data Types === 

{{hidden begin
|title = <code>planet = 'Earth'</code> What datatype does the variable planet have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
+ String
|| Explanation: Correct
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>apples = 5</code> What datatype does the variable apples have?
}}
<quiz display=simple>
{
|type="()"}
+ Integer
|| Explanation: Correct
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>distance = 10.5</code> What datatype does the variable distance have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
+ Float
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>false = 7 > 2</code> What datatype does the variable false have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
+ Boolean
|| Explanation: Correct
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Boolean Operations === 

<code>var1 = True var2 = False</code>
What is the value of each variable after each of the following print statements?

{{hidden begin
|title = <code>print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True False</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var2 = var1 or var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = var1 and not var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>False True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = not(var1 and not var1) print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

=== Short Quiz: String Concatenation === 

<code>str1 = "Uni" str2 = "Bonn" str3 = str2 + str1 str4 = str1 * 3</code>

{{hidden begin
|title = What output do you expect after doing <code>print(str3)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>BonnUni</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = What output do you expect after doing <code>print(str4)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>UniUniUni</code>
</quiz>
{{hidden end}}

=== Short Quiz: Containers === 

Read the following code:

<code>uni = {"departments": ["physics", "chemistry"], "employees": 4000, "campuses": ("Poppelsdorf", "Endenich"),}</code>

What do the following lines print? Keep in mind that the lines could also give an error output.

{{hidden begin
|title = <code>print(uni[0])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>KeyError: 0</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["departments"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>physics</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["employees"] = 5000</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Nothing
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0] = "Innenstadt"</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>TypeError: 'tuple' object does not support item assignment</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Poppelsdorf</code>
</quiz>
{{hidden end}}

=== Short Quiz: Understanding if Statements === 

Which of the following statements would get printed?

{{hidden begin
|title = <code>if <nowiki>''</nowiki>: print('empty string is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 'word': print('word is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if []: print('empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if [1, 2, 3]: print('non-empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 0: print('zero is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 1: print('one is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Understanding for Loops === 

{{hidden begin
|title = Consider the following Python code: <code>numbers = [5, 8, -3, 6, 0, -2] summed = 0 for num in numbers:     if num < 0:         continue     summed = summed + num     print(summed)</code> 

What does the output look like after the loop is done running?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>5 13 19 19</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-09T16:57:23Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Variable Assignment === 

What values do the two variables "mass" and "age" have in the following lines?

{{hidden begin
|title = <code>mass = 47.5 print(mass)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = 122 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = age - 20 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 102</code>
</quiz>
{{hidden end}}

=== Short Quiz: Data Types === 

{{hidden begin
|title = <code>planet = 'Earth'</code> What datatype does the variable planet have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
+ String
|| Explanation: Correct
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>apples = 5</code> What datatype does the variable apples have?
}}
<quiz display=simple>
{
|type="()"}
+ Integer
|| Explanation: Correct
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>distance = 10.5</code> What datatype does the variable distance have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
+ Float
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>false = 7 > 2</code> What datatype does the variable false have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
+ Boolean
|| Explanation: Correct
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Boolean Operations === 

<code>var1 = True var2 = False</code>
What is the value of each variable after each of the following print statements?

{{hidden begin
|title = <code>print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True False</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var2 = var1 or var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = var1 and not var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>False True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = not(var1 and not var1) print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

=== Short Quiz: String Concatenation === 

<code>str1 = "Uni" str2 = "Bonn" str3 = str2 + str1 str4 = str1 * 3</code>

{{hidden begin
|title = What output do you expect after doing <code>print(str3)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>BonnUni</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = What output do you expect after doing <code>print(str4)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>UniUniUni</code>
</quiz>
{{hidden end}}

=== Short Quiz: Containers === 

Read the following code:

<code>uni = {"departments": ["physics", "chemistry"], "employees": 4000, "campuses": ("Poppelsdorf", "Endenich"),}</code>

What do the following lines print? Keep in mind that the lines could also give an error output.

{{hidden begin
|title = <code>print(uni[0])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>KeyError: 0</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["departments"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>physics</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["employees"] = 5000</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Nothing
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0] = "Innenstadt"</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>TypeError: 'tuple' object does not support item assignment</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Poppelsdorf</code>
</quiz>
{{hidden end}}

=== Short Quiz: Understanding if Statements === 

Which of the following statements would get printed?

{{hidden begin
|title = <code>if <nowiki>''</nowiki>: print('empty string is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 'word': print('word is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if []: print('empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if [1, 2, 3]: print('non-empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 0: print('zero is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 1: print('one is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Understanding for Loops === 

{{hidden begin
|title = Consider the following Python code: <code>numbers = [5, 8, -3, 6, 0, -2] summed = 0 for num in numbers:     if num < 0:         continue     summed = summed + num     print(summed)</code> What does the output look like after the loop is done running?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>5 13 19 19</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-09T16:54:37Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Variable Assignment === 

What values do the two variables "mass" and "age" have in the following lines?

{{hidden begin
|title = <code>mass = 47.5 print(mass)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = 122 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = age - 20 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 102</code>
</quiz>
{{hidden end}}

=== Short Quiz: Data Types === 

{{hidden begin
|title = <code>planet = 'Earth'</code> What datatype does the variable planet have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
+ String
|| Explanation: Correct
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>apples = 5</code> What datatype does the variable apples have?
}}
<quiz display=simple>
{
|type="()"}
+ Integer
|| Explanation: Correct
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>distance = 10.5</code> What datatype does the variable distance have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
+ Float
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>false = 7 > 2</code> What datatype does the variable false have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
+ Boolean
|| Explanation: Correct
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Boolean Operations === 

<code>var1 = True var2 = False</code>
What is the value of each variable after each of the following print statements?

{{hidden begin
|title = <code>print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True False</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var2 = var1 or var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = var1 and not var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>False True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = not(var1 and not var1) print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

=== Short Quiz: String Concatenation === 

<code>str1 = "Uni" str2 = "Bonn" str3 = str2 + str1 str4 = str1 * 3</code>

{{hidden begin
|title = What output do you expect after doing <code>print(str3)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>BonnUni</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = What output do you expect after doing <code>print(str4)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>UniUniUni</code>
</quiz>
{{hidden end}}

=== Short Quiz: Containers === 

Read the following code:

<code>uni = {"departments": ["physics", "chemistry"], "employees": 4000, "campuses": ("Poppelsdorf", "Endenich"),}</code>

What do the following lines print? Keep in mind that the lines could also give an error output.

{{hidden begin
|title = <code>print(uni[0])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>KeyError: 0</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["departments"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>physics</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["employees"] = 5000</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Nothing
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0] = "Innenstadt"</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>TypeError: 'tuple' object does not support item assignment</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Poppelsdorf</code>
</quiz>
{{hidden end}}

=== Short Quiz: Understanding if Statements === 

Which of the following statements would get printed?

{{hidden begin
|title = <code>if <nowiki>''</nowiki>: print('empty string is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 'word': print('word is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if []: print('empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if [1, 2, 3]: print('non-empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 0: print('zero is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 1: print('one is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Understanding for Loops === 

{{hidden begin
|title = Consider the following Python code: <code>numbers = [5, 8, -3, 6, 0, -2] summed = 0 for num in numbers: if num < 0: continue summed = summed + num print(summed)</code> What does the output look like after the loop is done running?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>5 13 19 19</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-09T16:54:20Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Variable Assignment === 

What values do the two variables "mass" and "age" have in the following lines?

{{hidden begin
|title = <code>mass = 47.5 print(mass)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = 122 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = age - 20 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 102</code>
</quiz>
{{hidden end}}

=== Short Quiz: Data Types === 

{{hidden begin
|title = <code>planet = 'Earth'</code> What datatype does the variable planet have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
+ String
|| Explanation: Correct
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>apples = 5</code> What datatype does the variable apples have?
}}
<quiz display=simple>
{
|type="()"}
+ Integer
|| Explanation: Correct
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>distance = 10.5</code> What datatype does the variable distance have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
+ Float
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>false = 7 > 2</code> What datatype does the variable false have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
+ Boolean
|| Explanation: Correct
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Boolean Operations === 

<code>var1 = True var2 = False</code>
What is the value of each variable after each of the following print statements?

{{hidden begin
|title = <code>print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True False</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var2 = var1 or var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = var1 and not var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>False True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = not(var1 and not var1) print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

=== Short Quiz: String Concatenation === 

<code>str1 = "Uni" str2 = "Bonn" str3 = str2 + str1 str4 = str1 * 3</code>

{{hidden begin
|title = What output do you expect after doing <code>print(str3)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>BonnUni</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = What output do you expect after doing <code>print(str4)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>UniUniUni</code>
</quiz>
{{hidden end}}

=== Short Quiz: Containers === 

Read the following code:

<code>uni = {"departments": ["physics", "chemistry"], "employees": 4000, "campuses": ("Poppelsdorf", "Endenich"),}</code>

What do the following lines print? Keep in mind that the lines could also give an error output.

{{hidden begin
|title = <code>print(uni[0])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>KeyError: 0</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["departments"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>physics</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["employees"] = 5000</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Nothing
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0] = "Innenstadt"</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>TypeError: 'tuple' object does not support item assignment</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Poppelsdorf</code>
</quiz>
{{hidden end}}

=== Short Quiz: Understanding if Statements === 

Which of the following statements would get printed?

{{hidden begin
|title = <code>if <nowiki>''</nowiki>: print('empty string is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 'word': print('word is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if []: print('empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if [1, 2, 3]: print('non-empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 0: print('zero is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 1: print('one is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Understanding for Loops === 

{{hidden begin
|title = Consider the following Python code: <code>numbers = [5, 8, -3, 6, 0, -2] summed = 0 for num in numbers: if num < 0: continue summed = summed + num print(summed)</code> What does the output look like after the loop is done running?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>5 13 19 19</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-09T16:53:29Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Variable Assignment === 

What values do the two variables "mass" and "age" have in the following lines?

{{hidden begin
|title = <code>mass = 47.5 print(mass)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = 122 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = age - 20 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 102</code>
</quiz>
{{hidden end}}

=== Short Quiz: Data Types === 

{{hidden begin
|title = <code>planet = 'Earth'</code> What datatype does the variable planet have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
+ String
|| Explanation: Correct
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>apples = 5</code> What datatype does the variable apples have?
}}
<quiz display=simple>
{
|type="()"}
+ Integer
|| Explanation: Correct
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>distance = 10.5</code> What datatype does the variable distance have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
+ Float
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>false = 7 > 2</code> What datatype does the variable false have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
+ Boolean
|| Explanation: Correct
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Boolean Operations === 

<code>var1 = True var2 = False</code>
What is the value of each variable after each of the following print statements?

{{hidden begin
|title = <code>print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True False</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var2 = var1 or var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = var1 and not var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>False True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = not(var1 and not var1) print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

=== Short Quiz: String Concatenation === 

<code>str1 = "Uni" str2 = "Bonn" str3 = str2 + str1 str4 = str1 * 3</code>

{{hidden begin
|title = What output do you expect after doing <code>print(str3)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>BonnUni</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = What output do you expect after doing <code>print(str4)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>UniUniUni</code>
</quiz>
{{hidden end}}

=== Short Quiz: Containers === 

Read the following code:

<code>uni = {"departments": ["physics", "chemistry"], "employees": 4000, "campuses": ("Poppelsdorf", "Endenich"),}</code>

What do the following lines print? Keep in mind that the lines could also give an error output.

{{hidden begin
|title = <code>print(uni[0])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>KeyError: 0</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["departments"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>physics</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["employees"] = 5000</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Nothing
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0] = "Innenstadt"</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>TypeError: 'tuple' object does not support item assignment</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Poppelsdorf</code>
</quiz>
{{hidden end}}

=== Short Quiz: Understanding if Statements === 

Which of the following statements would get printed?

{{hidden begin
|title = <code>if <nowiki>''</nowiki>: print('empty string is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 'word': print('word is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if []: print('empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if [1, 2, 3]: print('non-empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 0: print('zero is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 1: print('one is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Understanding for Loops === 

{{hidden begin
|title = Consider the following Python code: <code>numbers = [5, 8, -3, 6, 0, -2] summed = 0
 for num in numbers: if num < 0: continue summed = summed + num print(summed)</code> What does the output
look like after the loop is done running?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>5 13 19 19</code>
</quiz>
{{hidden end}}

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-09T16:45:10Z

Praveer-mathur-9f3d@uni-bonn.de:

User:Praveer-mathur-9f3d@uni-bonn.de

2026-03-09T16:41:50Z

Praveer-mathur-9f3d@uni-bonn.de:

=== Short Quiz: Variable Assignment === 

What values do the two variables "mass" and "age" have in the following lines?

{{hidden begin
|title = <code>mass = 47.5 print(mass)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = 122 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>47.5 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>mass = mass * 2.0 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 122</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>age = age - 20 print(mass, age)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>95.0 102</code>
</quiz>
{{hidden end}}

=== Short Quiz: Data Types === 

{{hidden begin
|title = <code>planet = 'Earth'</code> What datatype does the variable planet have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
+ String
|| Explanation: Correct
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>apples = 5</code> What datatype does the variable apples have?
}}
<quiz display=simple>
{
|type="()"}
+ Integer
|| Explanation: Correct
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>distance = 10.5</code> What datatype does the variable distance have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
- Boolean
|| Explanation: Wrong
+ Float
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>false = 7 > 2</code> What datatype does the variable false have?
}}
<quiz display=simple>
{
|type="()"}
- Integer
|| Explanation: Wrong
- String
|| Explanation: Wrong
+ Boolean
|| Explanation: Correct
- Float
|| Explanation: Wrong
</quiz>
{{hidden end}}

=== Short Quiz: Boolean Operations === 

<code>var1 = True var2 = False</code>
What is the value of each variable after each of the following print statements?

{{hidden begin
|title = <code>print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True False</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var2 = var1 or var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = var1 and not var2 print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>False True</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>var1 = not(var1 and not var1) print(var1, var2)</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>True True</code>
</quiz>
{{hidden end}}

=== Short Quiz: String Concatenation === 

<code>str1 = "Uni" str2 = "Bonn" str3 = str2 + str1 str4 = str1 * 3</code>

{{hidden begin
|title = What output do you expect after doing <code>print(str3)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>BonnUni</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = What output do you expect after doing <code>print(str4)</code>?
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>UniUniUni</code>
</quiz>
{{hidden end}}

=== Short Quiz: Containers === 

Read the following code:

<code>uni = {"departments": ["physics", "chemistry"], "employees": 4000, "campuses": ("Poppelsdorf", "Endenich"),}</code>

What do the following lines print? Keep in mind that the lines could also give an error output.

{{hidden begin
|title = <code>print(uni[0])</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>KeyError: 0</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["departments"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>physics</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["employees"] = 5000</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| Nothing
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0] = "Innenstadt"</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>TypeError: 'tuple' object does not support item assignment</code>
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>print(uni["campuses"][0]</code>
}}
<quiz display=simple>
{
|type="()"}
+ Click and submit to see the answer
|| <code>Poppelsdorf</code>
</quiz>
{{hidden end}}

=== Short Quiz: Understanding if Statements === 

Which of the following statements would get printed?

{{hidden begin
|title = <code>if '': print('empty string is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 'word': print('word is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if []: print('empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if [1, 2, 3]: print('non-empty list is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 0: print('zero is true')</code>
}}
<quiz display=simple>
{
|type="()"}
- Yes
|| Explanation: Wrong
+ No
|| Explanation: Correct
</quiz>
{{hidden end}}

{{hidden begin
|title = <code>if 1: print('one is true')</code>
}}
<quiz display=simple>
{
|type="()"}
+ Yes
|| Explanation: Correct
- No
|| Explanation: Wrong
</quiz>
{{hidden end}}