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urandom_basic.py

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 esp-extra-scripts

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urandom_basic.py

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try:

import urandom as random

except ImportError:

import random

# check getrandbits returns a value within the bit range

for b in (1, 2, 3, 4, 16, 32):

for i in range(50):

assert random.getrandbits(b) < (1 << b)

# check that seed(0) gives a non-zero value

random.seed(0)

print(random.getrandbits(16) != 0)

# check that PRNG is repeatable

random.seed(1)

r = random.getrandbits(16)

random.seed(1)

print(random.getrandbits(16) == r)