''.join(random.sample(string.ascii_letters + string.digits, 8)) //字符串中不会重复
for _ in range(8):
s += random.choice(string.ascii_letters + string.digits) //字符串可以重复
random.uniform(10, 20)
random.randint(12, 20)
原文:https://www.cnblogs.com/wanderingfish/p/9337535.html