Python
Generate QR Codes in Python with the qrcode Library
A hands-on guide to creating, styling, and batch-generating QR codes in Python with the qrcode library — from a one-liner to production-ready output.
Python
Async Python Demystified: A Practical Deep Dive into asyncio
Learn how Python's asyncio really works — from the event loop and coroutines to gather, TaskGroup, timeouts, semaphores, and running blocking code without freezing your program.
Python
Build Real Command-Line Tools with Python's argparse
Learn how to turn a Python script into a polished command-line tool with argparse — positional and optional arguments, types and validation, flags, subcommands, and the pitfalls that trip people up.
Python
Modern Python Type Hints: A Practical Guide to Static Typing with mypy
Learn how Python's type hints actually work — from basic annotations to Protocols, TypedDict, and generics — and how to catch bugs before runtime with mypy. A hands-on, example-driven guide for intermediate developers.
Python
Mastering Python's functools: Caching, Partials, and Smarter Functions
A practical deep dive into Python's functools module — memoization with lru_cache and cache, cached_property, partial application, reduce, singledispatch, total_ordering, and writing decorators that don't lose metadata.
Python
Stop Printing, Start Logging: A Practical Deep Dive into Python's logging Module
print() works for quick scripts, but real applications need log levels, structure, and control over where messages go. Learn to use Python's logging module properly: loggers, handlers, formatters, dictConfig, rotating files, and the common pitfalls to avoid.
News
Python This Week — June 22, 2026: 3.15 Beta 3, uv Ships Twice, and EuroPython Counts Down
Your week in Python: 3.15.0 beta 3 is due June 23, Astral's uv shipped 0.11.22 and 0.11.23, a new PyPI supply-chain wave spurred fresh malware tooling, Python 3.14.6 landed ~179 fixes, and EuroPython 2026 revealed its schedule one month out.
Python
Mastering Python's itertools: Lazy, Memory-Efficient Iteration Done Right
Learn how Python's itertools module lets you build fast, lazy, memory-efficient data pipelines from small composable building blocks — with runnable examples covering count, chain, islice, accumulate, groupby, batched, and more.
Python
Mastering Python Decorators: From Closures to Production-Ready Patterns
Learn how Python decorators really work — from closures and the @ syntax to functools.wraps, decorators that take arguments, stacking, stateful and class-based decorators, plus practical retry and caching patterns you can use today.
Python
How to Read QR Codes in Python with OpenCV and pyzbar
QR codes are everywhere – learn how to decode them in just a few lines of Python using pyzbar and OpenCV, from static images to a live webcam scanner.
Python
Mastering Python Dataclasses: Less Boilerplate, Better Models
Learn how Python's dataclasses eliminate boilerplate for data-holding classes — covering defaults, default_factory, frozen instances, __post_init__, ordering, slots, inheritance, and the helpers that make them a joy to use.
Python
Mastering Context Managers in Python: From the `with` Statement to `contextlib`
Learn how Python's `with` statement really works and how to build your own context managers three ways — the `__enter__`/`__exit__` protocol, the `@contextmanager` decorator, and standard-library tools like `suppress`, `redirect_stdout`, and `ExitStack`.