Random sample from a very long iterable, in python

Question

I have a long python generator that I want to \"thin out\" by randomly selecting a subset of values. Unfortunately, random.sample() will not work with arbitrary

Answer 1

Use the itertools.compress() function, with a random selector function:

itertools.compress(long_sequence, (random.randint(0, 100) < 10 for x in itertools.repeat(1)))