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Generating uuid.uuid4() up to three times faster #29125

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Generating uuid.uuid4() up to three times faster #29125

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4 changes: 3 additions & 1 deletion Lib/uuid.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,8 @@
"""

import os
import platform
import random
import sys

from enum import Enum, _simple_enum
Expand Down Expand Up @@ -713,7 +715,7 @@ def uuid3(namespace, name):

def uuid4():
"""Generate a random UUID."""
return UUID(bytes=os.urandom(16), version=4)
return UUID(int=random.getrandbits(128), version=4)

def uuid5(namespace, name):
"""Generate a UUID from the SHA-1 hash of a namespace UUID and a name."""
Expand Down