python-dateutil

python-dateutil provides powerful extensions to Python's standard datetime module, including flexible date/time string parsing, relative delta arithmetic, recurrence rules (RFC 2445 superset), and rich timezone support via tzfile, TZ strings, and Windows registry. Current version is 2.9.0.post0 (released 2024-03-01). The project is considered functionally stable but upstream activity is slow; Fedora has flagged it as unmaintained. The PyPI install name (python-dateutil) differs from the importable name (dateutil).