Mercurial > p > roundup > code
view roundup/anypy/random_.py @ 8398:b976dd2beb1a
doc: record loss of all files in project directory except the website.
Lost the log file we were using for coordinating, the cgi-bin directory
that redirected old wiki links. The venv for processing the
documentation (althogh it was old and they only support python2).
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Sun, 13 Jul 2025 01:38:15 -0400 |
| parents | f002747b6773 |
| children |
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# ruff: noqa: ARG001 try: from secrets import choice, randbelow, token_bytes def seed(v=None): pass is_weak = False except ImportError: import os as _os import random as _random # prefer to use SystemRandom if it is available if hasattr(_random, 'SystemRandom'): def seed(v=None): pass _r = _random.SystemRandom() is_weak = False else: # don't completely throw away the existing state, but add some # more random state to the existing state def seed(v=None): # ruff: noqa: PLC0415 import os import time _r.seed((_r.getstate(), v, hasattr(os, 'getpid') and os.getpid(), time.time())) # create our own instance so we don't mess with the global # random number generator _r = _random.Random() seed() is_weak = True choice = _r.choice def randbelow(i): return _r.randint(0, i - 1) if hasattr(_os, 'urandom'): def token_bytes(size): return _os.urandom(size) else: def token_bytes(size): _bchr = chr if str is bytes else lambda x: bytes((x,)) return b''.join([_bchr(_r.getrandbits(8)) for i in range(size)])
