News
Python 3.14.6 (released June 10, 2026) is a maintenance update with nine security fixes — including patches for CVE-2026-45186 and the completion of CVE-2021-4189 — plus OpenSSL 3.5.7, pip 26.1.2, and numerous crash and free-threading fixes.
Python
Learn how to run work in parallel with Python's concurrent.futures — when to reach for threads vs. processes, how to use ThreadPoolExecutor and ProcessPoolExecutor, and how to handle results, exceptions, and timeouts cleanly.
Python
Learn how to replace fragile magic numbers and string constants with Python's enum module — covering Enum, IntEnum, StrEnum, Flag, auto(), custom methods, aliases, the @unique decorator, and the pitfalls to avoid.
Python
Learn to handle dates and times correctly in Python: naive vs. aware datetimes, converting between time zones with the standard-library zoneinfo, parsing and formatting, safe arithmetic, and the DST pitfalls that bite real applications.
Python
Learn Python's re module from the ground up: search vs. match, groups and named captures, substitution with functions, lookarounds, flags, and the pitfalls that trip up almost everyone.
News
A steady week in Python: 3.15 reaches beta 3 with its feature set locked, Polars ships 1.42.0, CPython 3.14.6 and 3.13.14 maintenance releases land, recent Django security fixes warrant upgrading, and EuroPython 2026 nears in Kraków.
Python
Go beyond switch statements. Learn how Python's match/case destructures sequences, mappings, and objects — with capture patterns, class patterns, guards, and the pitfalls that trip people up.
Python
Go beyond `assert` and learn pytest the way professionals use it: clean fixtures for setup and teardown, parametrization to kill duplicated tests, and monkeypatch/mock to isolate code from the network and filesystem.
Python
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
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
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
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.