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I have read the Doc of Numpy,but I still don't know how a random number is generated if I don't use Generator or RandomState. As far as I know,we can get a random number from 1 to 10 by

#use RandomState
print(np.random.RandomState().randint(1,10,(1)))
#use Generator
print(np.random.default_rng().randint(1,10,(1)))
#my question
print(np.random.default_rng().integers(1,10,(1)))

So how the random number is generated in the third way?

Amess
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    Does this answer your question? [How does NumPy seed its random number generators if no seed is provided?](https://stackoverflow.com/questions/66092967/how-does-numpy-seed-its-random-number-generators-if-no-seed-is-provided) – Peter O. Feb 13 '21 at 15:30

1 Answers1

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(This targets the first version of the question)

There is just a RandomState created globally at start/import/load-time.

See code

More to read in this discussion: Public access to global state for numpy.random

sascha
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