diff options
Diffstat (limited to 'Lib/random.py')
| -rw-r--r-- | Lib/random.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Lib/random.py b/Lib/random.py index e24737d..82345fa 100644 --- a/Lib/random.py +++ b/Lib/random.py @@ -739,6 +739,12 @@ class SystemRandom(Random): x = int.from_bytes(_urandom(numbytes), 'big') return x >> (numbytes * 8 - k) # trim excess bits + def randbytes(self, n): + """Generate n random bytes.""" + # os.urandom(n) fails with ValueError for n < 0 + # and returns an empty bytes string for n == 0. + return _urandom(n) + def seed(self, *args, **kwds): "Stub method. Not used for a system random number generator." return None @@ -819,6 +825,7 @@ weibullvariate = _inst.weibullvariate getstate = _inst.getstate setstate = _inst.setstate getrandbits = _inst.getrandbits +randbytes = _inst.randbytes if hasattr(_os, "fork"): _os.register_at_fork(after_in_child=_inst.seed) |