print('----------欢迎您使用本系统------------')
storage_name = [] # 用列表储存用户名
storage_user = {'yuan': 'yuan111'} # 用字典将用户名设为建 密码为值
s = ['傻', '蠢', '笨', '呆', '愚']
choice = input('您是否注册过账号 没有请注册 1：注册 2：登录 3：退出系统n')
yi = True
if choice == '1':
print("----------注册账号----------")
while yi:
pan = True
while pan:
user_name = input('请输入用户名：')
username_list = list(user_name)
for i in username_list:
if i in s:
print("用户名不合法请重新输入：")
pan = True
break
else:
pan = False
pan = True
password = input("输入密码不少于6位，需要有数字和字母：")
while pan:
a = len(password)
if a < 6:
password = input("请重新输入密码不少于6位，需要有数字和字母：")
else:
if password.isdigit() or password.isalpha():
password = input("密码不能为纯数字或纯字母，请重新输入：")
else:
pan = False
storage_name.append(user_name)
for item in storage_name:
if item not in storage_user:
storage_user[item] = password
yi = False
choice = '2'
else:
print("用户名重复")
print("注册失败")
storage_name.clear()
break
if choice == '2':
print("----------登入账号----------")
n1 = 0 # 记录密码错误次数
n2 = 0 # 记录账号错误次数
name = input('请输入用户名:')
pan = True
while pan:
if name in storage_user:
key = input('请输入密码:')
while pan:
if storage_user[name] == key:
print('登录成功')
pan = False
break
else:
n1 += 1
if n1 >= 3:
print("错误次数过多，禁止登入此系统")
pan = False
break
print("密码错误，还有%d次机会" % (3-n1))
key = input("请重新输入：")
else:
n2 += 1
if n2 >= 3:
print("错误次数过多，禁止登入此系统")
pan = False
break
print("用户名错误，还有%d次机会" % (3 - n2))
name = input("请重新输入：")
