Python

Language-level notes: idioms, gotchas, and concepts worth remembering while writing Python day to day.

Articles

• Python Tips & Tricks — name mangling, scopes and closures, concurrency vs. parallelism, threading vs. multiprocessing.
• UV: Managing Python Environments and Projects — a fast, all-in-one replacement for pip, pyenv, virtualenv, and pip-tools.
• Metaprogramming & Dunder Methods — the data model protocol, __call__, descriptors, __init_subclass__, and when a metaclass actually earns its place.
• Typing Generics & TypeVar — TypeVar, generic classes (classic and PEP 695 syntax), ParamSpec, overload, and static checking with mypy/pyright.
• Designing Concurrent Tasks with asyncio — the event loop model, TaskGroup vs. gather, cancellation, and the synchronization primitives.
• Logging & Tracing in Python — the logging module done right, contextvars for async-safe request context, and distributed tracing basics.

Contributing

Found a Python quirk or pattern worth keeping? Add it here as its own file. See Contributing for the how-to.