diff options
Diffstat (limited to 'Lib/random.py')
| -rw-r--r-- | Lib/random.py | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/Lib/random.py b/Lib/random.py index 365a019..be4401c 100644 --- a/Lib/random.py +++ b/Lib/random.py @@ -121,7 +121,10 @@ class Random(_random.Random): break def seed(self, a=None, version=2): - """Initialize internal state from hashable object. + """Initialize internal state from a seed. + + The only supported seed types are None, int, float, + str, bytes, and bytearray. None or no argument seeds from current time or from an operating system specific randomness source if available. @@ -143,12 +146,20 @@ class Random(_random.Random): x ^= len(a) a = -2 if x == -1 else x - if version == 2 and isinstance(a, (str, bytes, bytearray)): + elif version == 2 and isinstance(a, (str, bytes, bytearray)): if isinstance(a, str): a = a.encode() a += _sha512(a).digest() a = int.from_bytes(a, 'big') + elif not isinstance(a, (type(None), int, float, str, bytes, bytearray)): + _warn('Seeding based on hashing is deprecated\n' + 'since Python 3.9 and will be removed in a subsequent ' + 'version. The only \n' + 'supported seed types are: None, ' + 'int, float, str, bytes, and bytearray.', + DeprecationWarning, 2) + super().seed(a) self.gauss_next = None |