#Python
147 posts
Modern Python Advanced #5: GIL and concurrency — threading vs multiprocessing vs asyncio
What the GIL is, the role of threading/multiprocessing/asyncio, and the free-threaded build of Python 3.13–3.14 (PEP 703/779) — all in one place.
Modern Python Advanced #4: Async in depth — event loop, gather/wait, async generator
The next step from intermediate intro — how the event loop actually works, the difference between Future and Task, gather vs wait, async generator, and async iteration.
Modern Python Advanced #3: Metaclasses — when do you really need them?
Classes that build classes — what type really is, division of labor with __init_subclass__, what class decorators can solve, and the narrow places where you really need a metaclass.
Docker in Practice #1: Containerizing FastAPI — uv, Multi-stage, non-root
First post of the practice series. Containerizing the most common scenario — a FastAPI app. Slim base on uv, multi-stage to separate build from runtime deps, a non-root user, and HEALTHCHECK — in a shape that goes straight to production.
Modern Python Advanced #2: Descriptors and __set_name__
How property works — the __get__/__set__ protocol and data/non-data descriptors, and clean validation fields with __set_name__.
Modern Python Advanced #1: Magic methods in depth and protocols
Every hook where Python objects integrate with language features — __call__, __getitem__, __hash__, __format__, __getattr__ — gathered in one place.
Modern Python Intermediate #7: Async intro (asyncio)
Meaning of async/await, the event loop, asyncio.gather and TaskGroup, and mixing with sync code — a first step into asyncio in one place.
Modern Python Intermediate #6: Pattern matching in depth
The next step from basics match-case — class patterns and __match_args__, sequence/mapping patterns, captures and guards, plus anti-patterns.
Modern Python Intermediate #5: Decorator patterns
Every form of decorators that wrap functions — basic form, parameterized decorators, functools.wraps, class decorators, and ParamSpec.
Modern Python Intermediate #4: Iterables/generators/yield from
How for works — the iterable protocol, generator functions and expressions, delegation with yield from, and send/throw — all in one place.
Modern Python Intermediate #3: Context managers (with, contextlib)
How with collapses try/finally, building your own context manager with __enter__/__exit__, the concise @contextmanager form, and practical tools like ExitStack and suppress.
Modern Python Intermediate #2: typing in earnest — Generic, Protocol, TypedDict, Literal
The next step from basics type hints — Generic for parameterizing types, Protocol for precise duck typing, TypedDict for dict shapes, and Literal for narrow unions.