Generate random number in range excluding some numbers

问题

Is there a simple way in Python to generate a random number in a range excluding some subset of numbers in that range?

For example, I know that you can generate a random number between 0 and 9 with:

from random import randint
randint(0,9)

What if I have a list, e.g. exclude=[2,5,7], that I don't want to be returned?

回答1:

Try this:

from random import choice

print choice([i for i in range(0,9) if i not in [2,5,7]])

回答2:

Try with something like this:

from random import randint

def my_custom_random():
  exclude=[2,5,7]
  randInt = randint(0,9)
  return my_custom_random() if randInt in exclude else randInt 

print(my_custom_random())

来源：https://stackoverflow.com/questions/42999093/generate-random-number-in-range-excluding-some-numbers