This folder contains personal notes and beginner-friendly documentation about important Python concepts commonly used in 42 School projects and modern Python development.

The goal of these docs is to:

• simplify difficult concepts
• provide practical examples
• help with debugging and project organization
• create quick references for future projects

• Pydantic v2 - Core Concepts Review
• JSON and Data Validation

• Python Typing Guide
• OOP Concepts
• Exceptions and Error Handling

• mypy and flake8 Guide
• Virtual Environments Guide

• Git Workflow for 42

These notes include explanations and examples for topics such as:

• Optional, Union, Callable, Any
• OOP concepts and software structure
• try / except / custom exceptions
• Pydantic models and validators
• JSON serialization and validation
• venv, pip, requirements.txt, Poetry
• mypy and flake8
• Git branches, merge, stash, reset, detached HEAD
• Common issues found in 42 School environments

During 42 projects, many concepts are learned very quickly and often revisited later.

These documents were created to:

• centralize important knowledge
• make future revision easier
• help other students
• document common problems and solutions
• improve long-term understanding

More topics may be added in the future, including:

• MLX and graphics systems
• BFS / DFS algorithms
• Maze generation
• Parsing systems
• Coordinate systems
• XPM textures
• Game loops
• Design patterns