随机生成用户名和密码，需求如下

#账号和密码
#必须包含字母和数字，长度在6-12之间
#密码，必须包含大小写字母、数字、特殊符号，长度在8-12之间
#输入几，就产生几条，并且用户名不能重复

import string,random
number = input("请输入生成的条数:").strip()
# print(type(number))
if not number.isdigit():
    print("请输入整数")
else:
    number = int(number)

def check_username(username):
    return set(username) & set(string.ascii_letters) and set(username) & set(string.digits)
def check_password(password):
    return set(password) & set(string.ascii_uppercase) and set(password) & set(string.ascii_lowercase) and \
    set(password) & set(string.digits) and set(password) & set(string.punctuation)
l = {}
count =0
while count<number:
    username_length = random.randint(6,12)
    username_list = random.sample(string.ascii_letters + string.digits,username_length)
    if check_username(username_list):
        username = ''.join(username_list)
    else:
        continue
    password_length = random.randint(8,12)
    password_list = random.sample(string.ascii_letters + string.digits + string.punctuation,password_length)
    if check_password(password_list):
        password = ''.join(password_list)
    else:
        continue
    if username not in l:
        count += 1
        l[username] = password
print(l)