This questionnaire is not perfectly suitable for studying in order to catch up; however, the questions should cover a broad range of topics around our course's scope and highlight potential weak points.

Python

• Have you worked with Python 3 before?

• Do you know how to run Python scripts?
• Did you install pip packages before?
• Did you use Jupyter Notebooks before?

• Do you know how to assign variables?
• How to use for and while loops?
• How to define functions with default arguments?
• How to use *args, **kwargs and variable unpacking?
• When does call by object reference happen and why might it lead to unexpected problems?

• How is a class defined and instantiated?
• How does inheritance work? Why use super()?

• How is a generator defined and iterated?
• What is a list comprehension?
• How can the entries of a list be doubled using a list comprehension?
• How to get only even entries of a list using a list comprehension?
• How to get the Collatz successor of each number in a list using a list comprehension and a conditional expression?

• How is a dictionary defined? How can you get a value?
• What ways can a dict be iterated?
• What are dictionary comprehensions?

• What are lambda functions? Why are they used?
• What is map()?
• How to use the key argument in sorted()?

• Have you worked with numpy before?
• What are ndarrays? Why use them?
• What are shape and dtype? How can both be altered?
• What is the difference between reshape and transpose? When can you safely use reshape?
• How to matrix multiply two ndarrays?
• What is the axis argument in ndarray.sum()?

• How to read all lines from a file?
• What is JSON? How to read/write JSON data in Python?

Linux Command line/Remote work

• How to compose shell commands with pipes and input/output redirection?
• How to pass each line from an input file to the same command as an argument, and run all resulting processes in parallel?
• How to find out how many lines in a text file contain the strings "cat" or "hat"?
• How to download and then unpack a zip file from the command line?

• How to log into a remote machine via SSH?
• What is an SSH public key and how to create one?
• How to make sure a program continues to run after you log out?
• How to transfer a file to a remote machine using only an SSH connection?

Machine Learning Basics

• What is the difference between supervised and unsupervised learning?
• What is the difference between regression and classification?
• What is gradient descent, and how does it work?
• What are precision, recall and accuracy, and how are they computed?
• What is overfitting, why is it a problem, and how to detect and avoid it?