time-machine 3.3.0, a Python library for mocking date and time in tests, ships several notable improvements. Python 3.15 support is included, requiring a direct mock of datetime.date.today() due to a new CPython fast path that bypassed the existing patch. Core patched functions were rewritten from Python to C, yielding a ~30% speedup for calls like time.time(). Subinterpreter support is fixed so each interpreter can run independent time travel, potentially enabling parallel test execution. The migration CLI from freezegun gained four improvements: handling tick arguments, rewriting async function decorators, splitting from-imports, and fixing a bug with relative imports. Wheel distribution drops 32-bit Linux/Windows and free-threaded Python 3.13, and now builds with frame pointers enabled.
