验证码

import random
def gen_check():
    alpha_list = [i for i in range(65,123) if i<91 or i>96]
    check_str = ""
    for i in range(5):
        alpha = chr(random.choice(alpha_list ))
        check_str += str(random.choice([alpha,random.randint(0,9)]))
    return check_str

for i in range(9):
    print(gen_check() )