Course Index

01

Python Mental Model for JS Developers

Syntax map, indentation, truthiness, lists, dicts, list comprehensions

Start here → 02

Functions, Modules & Scope

def, *args, **kwargs, default args, LEGB scope, imports, __main__

→ 03

Classes & OOP

class, __init__, self, dunder methods, inheritance, @property, dataclasses

→ 04

Error Handling

try/except/else/finally, exception hierarchy, raising, EAFP vs LBYL

→ 05

File I/O & Context Managers

open(), with, pathlib, JSON, CSV, custom context managers

→ 06

The Standard Library

os, sys, subprocess, datetime, collections, itertools, re, functools

→ 07

Virtual Environments & pip

venv, pip, requirements.txt, pyproject.toml, uv, ecosystem map

→ 08

Decorators

@decorator, @wraps, decorator factories, logging, retry, memoize patterns

→ 09

Iterators & Generators

__iter__, __next__, yield, generator expressions, yield from, pipelines

→ 10

Async Python

asyncio, async/await vs JS, tasks, gather, aiohttp, blocking code

→ 11

Sets, Comprehensions & Built-ins

set ops, dict/set comprehensions, zip, sorted, any/all, walrus operator

→ 12

Type Hints

annotations, list[T], TypedDict, Protocol, Callable, TypeVar, mypy

→ 13

Testing with pytest

fixtures, parametrize, mocking, coverage — the Jest of Python

→ 14

HTTP Requests

requests, httpx, sessions, timeouts, error handling, Pydantic parsing

→ 15

Logging

logging module, levels, handlers, formatters, structured logging

→ 16

Pattern Matching & Enums

match/case (Python 3.10+), enum.Enum, IntEnum, Flag, auto()

→ 17

Concurrency: Threading, Multiprocessing & GIL

GIL explained, ThreadPoolExecutor, ProcessPoolExecutor, when to use what

→ 18

CLI Tools

argparse, Typer, Click, rich — building command-line programs

→ 19

Environment & Configuration

.env files, python-dotenv, Pydantic Settings, multi-env patterns

→ 20

Debugging

breakpoint(), pdb, reading tracebacks, VS Code debugger, profiling

Final lesson →