datetime_metadata

A small CPython extension built against the Limited C API (Py_LIMITED_API, stable ABI 3.12) that exercises NumPy's datetime64 / timedelta64 unit metadata (PyArray_DatetimeMetaData).

Build

uv venv
uv pip install numpy meson meson-python ninja
uv pip install -e . --no-build-isolation   # editable install via meson-python

Or compile directly with meson:

meson setup build
meson compile -C build

Use

import datetime_metadata as dm
dm.self_test()                       # -> 10 (number of checks)
dm.get_metadata("datetime64[10ms]")  # -> {'unit': 'ms', 'base': 8, 'num': 10}