cpython

Are Python Dictionaries Ordered? Yes, Since 3.7

Insertion order is a language guarantee, not an implementation accident.

Is Python 3.14 Free-Threaded by Default? GIL Explained

PEP 779 promoted the no-GIL build from experimental to officially supported in 3.14. It is still opt-in, and making it the default is a later phase.

When Does Python 3.10 Reach End of Life? (It Just Did)

Five years after 3.10.0 shipped, CPython 3.10 stopped getting security fixes. If 3.10 is still running in production, here is what changes and where to move next.

functools.reduce vs for-loop: Localhost Lab

math.fsum vs sum Float Totals: Localhost Lab

Hands-on math.fsum vs builtin sum for float totals: real items/s plus cancellation accuracy, measured on Linux localhost in this hands-on lab for SREs.

dataclass vs slots vs dict: Python Object Lab

Hands-on Python dataclass vs slots vs dict lab: instantiation and attribute ops/s plus RSS for classic, slots, dataclass, namedtuple, dict on localhost.