pyrift v0.5.0 — 90 rules, 316 tests

The biggest release yet

90 rules — 45 CPython + 45 PyPy

316 tests — all passing on Python 3.10, 3.11, 3.12, 3.13

Zero dependencies — pure Python

What's new in v0.5.0

CPython rules added (CPY019–CPY045)

• distutils removed in Python 3.12+
• datetime.utcnow() and utcfromtimestamp() deprecated in 3.12
• asyncio.get_event_loop() raises RuntimeError in 3.12+
• asyncio.iscoroutinefunction() deprecated in 3.12
• Bitwise inversion on bool deprecated in 3.12
• typing.TypeGuard, ParamSpec, TypeAlias, Never, TypeVarTuple, Unpack, Required, assert_never, reveal_type
• locale.resetlocale(), lib2to3, typing.io, typing.re removed in 3.13
• zoneinfo, graphlib require Python 3.9+
• str.removeprefix/removesuffix, pathlib.is_relative_to require Python 3.9+
• int.bit_count(), aiter(), anext(), math.lcm() require Python 3.10+
• dict | merge operator requires Python 3.9+
• NaN hash behaviour changed in 3.10

PyPy rules added (PPY008–PPY045)

• threading.local(), gc.collect(), sys.getsizeof(), sys.settrace()
• os.fork(), os.urandom(), subprocess.PIPE, open() buffering
• Generator GC timing, string concatenation O(n²), float('nan') identity
• builtins always module, readline.parse_and_bind() ignored
• sys.setrecursionlimit(), sys.flags, inspect.ismethod() differences
• C extension packages, decimal backend, decimal module differences
• Exception variable