New submission from Terji <terj...@yahoo.com>: Checking if a range's items are ll truthy can be done y checking if 0 the range contains 0, however currently Python iterates over the range, making the operation slower than needed.
>>> rng = range(1, 1_000_000) >>> timeit all(rng) 19.9 ms ± 599 µs per loop If the all function could special case range, this could be like made fast like this: if isinstance(obj, range): if 0 in obj: return False return True ---------- components: Interpreter Core messages: 344263 nosy: Petersen priority: normal severity: normal status: open title: all(range()...)) is needlessley slow type: performance versions: Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue37131> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com