从 Python 列表（list）中随机选择一个元素

import random

foo = ['a', 'b', 'c', 'd', 'e']
print(random.choice(foo))

foo = ['a', 'b', 'c', 'd', 'e']
from random import randrange
random_index = randrange(0,len(foo))
print foo[random_index]