Best Practices

Learn why Python scripts run slowly and how to fix it: use built-ins, list comprehensions, sets, generators, NumPy, cProfile profiling,

Learn Python threading: why scripts freeze, create and start threads, use join(), avoid race conditions with Lock, and use ThreadPoolExecutor

Build a simple Python TCP client using the socket module: connect to a server, send and receive bytes, handle errors,

Learn Python password hashing with bcrypt: generate secure hashes, verify passwords, understand salt, and build a complete authentication system.

Learn how Python dataclasses work: auto-generate __init__, __repr__, __eq__, use default values, field(), frozen=True, __post_init__, and asdict/astuple.

Learn what Python's GIL is, why it exists, how it limits multithreading, and when to use multiprocessing to achieve true

Learn how to measure Python code execution time with timeit: command line, setup parameter, function references, repeat(), and benchmarking best

Learn how to fix .env variable errors in Python using python-dotenv, load_dotenv, os.getenv, default values, find_dotenv, and API key security