How to use Python's random number generator wi

Question

Python's random seems are global, so modules changing it will effect each other.

While there are of course many 3rd party modules, is there a way using Python's standard library to have a random number local to a context.

(without using random.get/setstate which may be problematic when mixing code from different modules).

Something like...

r = random.context(seed=42)
number = r.randint(10, 20)

Where each module can use its own random context.

Answer 1

From the docs:

The functions supplied by this module are actually bound methods of a hidden instance of the random.Random class. You can instantiate your own instances of Random to get generators that don’t share state.

Make your own random.Random instance and use that.

rng = random.Random(42)
number = rng.randint(10, 20)