Maybe this helps:
#!/usr/bin/python3
import random
red = [1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35]
black = [2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36]
while True:
if input("press 'q' to stop the game or return to continue: ") == 'q':
break
number = random.randrange(0, 37)
print('\nNumber is: ', number)
if 1 <= number <= 17:
print('Number is small')
if number in red:
print('Number is red')
#if ....
#if ...