dorianturba/subjects

Train your problem-solving problem with python.

Logic training with Python

Usage of Internet is authorized.

Setup

Install requirements (with pip):

pip install -r requirements.txt

How to run test suite

Code in fill_me.py files

If you want to test your code, put your functions inside fill_me.py files.

On a specific folder

This is an example, and a good start.

pytest exercises/function
# or
python -m pytest exercises/function

On all folders

Note: You will get a lot of errors if not all required functions are implemented.

pytest
# or
python -m pytest

Rules

Forbidden python features

• imports,
• from imports,
• defining functions with builtin names,
• calls of function with builtin names except ['int', 'list', 'dict', 'bool', 'str', 'float', 'tuple', 'type', 'ord', 'chr'],
• calls of methods (eg. 'my_list.append()'),
• try clauses,
• break and continue statements,
• variables with builtin names or trailing underscore (eg. 'my_var_'),
• for loop,
• list comprehensions,
• dict comprehensions,
• set comprehensions,
• generator expressions,
• yield and yield from statements,
• raise statements,
• assert statements,
• while else statements,
• global statements,
• nonlocal statements,
• following operators on list: ['+', '+=', '==', '>=', '<=', '>', '<', '!=', '*='],
• following operators on dict: ['+', '+=', '==', '>=', '<=', '>', '<', '!=', '*=', '|', '&'],
• 3 args form of type,
• class definitions,
• in and not in operator,
• is and is not operator,
• positional only arguments, keyword only arguments, keywords defaults arguments, defaults arguments, variadic arguments, variadic keyword arguments,
• slices,
• packing and unpacking,

Respect PEP 8 style

PEP 8 is a style guide for Python. You can find it here.

You must respect two other rules:

• Line length must be less than 80 characters,
• Function length must be less than 25 lines.

Since you aren't allowed to use some python features, you should test your code with custom rules. This project has a setup.cfg file with a flake8 configuration, so you can run flake8 to check your code with properly excluded errors.

flake8
# or
python -m flake8

What to do if an error is found

• If the error is raised by flake8 because you didn't use a forbidden feature, you should report it on the issue tracker.
• If the error raised by flake8 is about complexity, you should reduce the cognitive complexity of your code.

Useful links

• pythontutor, visualize python memory
• Codingame.com

Copyright © 2022 Dorian Turba