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annotate roundup/anypy/random_.py @ 8478:ed4ef394d5d6

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doc: initial attempt to document setup of pgp support for email. Used an AI assistant to help write this. Basic gpg commands seem to work, but I have not tested this totally. Docs basically follow the setup used for pgp testing in the test suite. It looks like roundup accepts signed emails as well as encrypted and signed emails. But it does not generate signed emails. Also it looks like there is no PGP support for alternate email addresses. Only primary addresses can do PGP emails.
author John Rouillard <rouilj@ieee.org>
date Sat, 15 Nov 2025 16:59:24 -0500
parents f002747b6773
children
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1 # ruff: noqa: ARG001
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2 try:
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3 from secrets import choice, randbelow, token_bytes
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4
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5 def seed(v=None):
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6 pass
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7
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8 is_weak = False
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9 except ImportError:
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10 import os as _os
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11 import random as _random
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12
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13 # prefer to use SystemRandom if it is available
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14 if hasattr(_random, 'SystemRandom'):
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15 def seed(v=None):
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16 pass
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17
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18 _r = _random.SystemRandom()
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19 is_weak = False
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20 else:
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21 # don't completely throw away the existing state, but add some
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22 # more random state to the existing state
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23 def seed(v=None):
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24 # ruff: noqa: PLC0415
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25 import os
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26 import time
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27 _r.seed((_r.getstate(),
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28 v,
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29 hasattr(os, 'getpid') and os.getpid(),
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30 time.time()))
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31
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32 # create our own instance so we don't mess with the global
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33 # random number generator
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34 _r = _random.Random()
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35 seed()
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36 is_weak = True
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37
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38 choice = _r.choice
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39
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40 def randbelow(i):
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41 return _r.randint(0, i - 1)
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42
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43 if hasattr(_os, 'urandom'):
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44 def token_bytes(size):
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45 return _os.urandom(size)
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46 else:
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47 def token_bytes(size):
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48 _bchr = chr if str is bytes else lambda x: bytes((x,))
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49 return b''.join([_bchr(_r.getrandbits(8)) for i in range(size)])
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