PyLings

PyLings 🐍

Enhance Python programming skills through targeted practice with PyLings. This repository offers a unique, rustlings-style approach for preparing for Python interviews. With 35 warm-ups and 20 interview-focused exercises, users can progress from fundamental tasks to complex scenarios, all using Python 3.14 without any external dependencies.

Key Features

• Structured Exercises:
  • Warm-up Exercises: Tackle 35 succinct "fix this" challenges covering essential topics such as strings, collections, functions, and decorators.
  • Intermediate Challenges: Work through 10 exercises that delve into iterator utilities, caching mechanisms, and bug-hunting scenarios.
  • Advanced Tasks: Solve 7 high-level problems involving context managers, external sorting, and asynchronous operations.
  • Expert-Level Questions: Engage with 3 sophisticated exercises designed for senior developers, which include a mini dependency injection container and a generator event loop.

Engaging Practice Environment

Launching the project is straightforward:

python3 -m pylings

Each time code is saved, the next exercise is displayed with tests automatically rerun, enabling continuous learning. The controls are intuitive:

• n: Next exercise
• h: Hint for assistance
• r: Re-run tests
• l: List available tasks
• c: Check all tests
• x: Reset the current exercise
• s: View solution
• q: Quit the session

Comprehensive Resources

Solutions are conveniently organized in a corresponding structure within the solutions/ directory. A separate questions/middle.md and questions/senior.md document interview questions relevant to the different exercise levels.

Tips for Success

• Avoid viewing the solutions until all tests are passing.
• Identify edge cases before writing any code.
• After passing tests, engage with the discussion questions to emulate real interview scenarios.

For users who prefer basic testing without the PyLings interface, a traditional unit test execution command is also provided:

python3 -m unittest discover -s tests -p "test_ex05*" -v

Reference solutions can be explored by setting an environment variable to check accuracy:

SOLUTIONS=1 python3 -m unittest discover -s tests

Dive into PyLings to strengthen Python proficiency and prepare for interview success.