教你用python随机生成固定长度字符串的方法

from random import Random

def random_str(randomlength=8):
    str = ''

    chars = 'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz0123456789'

    length = len(chars) - 1

    random = Random()

    for i in range(randomlength):
        str+=chars[random.randint(0, length)]

    return str