How to generate a random UUID which is reproducible (with a seed) in Python

Question

The uuid4() function of Python\'s module uuid generates a random UUID, and seems to generate a different one every time:

In [1]: import uuid

In          


        

Answer 1

Gonna add this here if anyone needs to monkey patch in a seeded UUID. My code uses uuid.uuid4() but for testing I wanted consistent UUIDs. The following code is how I did that:

import uuid
import random

# -------------------------------------------
# Remove this block to generate different
# UUIDs everytime you run this code.
# This block should be right below the uuid
# import.
rd = random.Random()
rd.seed(0)
uuid.uuid4 = lambda: uuid.UUID(int=rd.getrandbits(128))
# -------------------------------------------

# Then normal code:

print(uuid.uuid4().hex)
print(uuid.uuid4().hex)
print(uuid.uuid4().hex)
print(uuid.uuid4().hex)