save project

diy2.py

+i=3
 username = "python"
 userpassword = "123456"
 while True:
+    if i>3:
         name = input("请输入用户名:")
         password = input("请输入密码:")
         if name == username and password == userpassword:
             print('登录成功')
+            i-=1
             break
         if name != username:
             print('用户名错误')
+        if name != username:
             continue
         if password != userpassword:
             print('密码错误')
+    if i=0:
+        print('你的账号已冻结')
 print("欢迎来到贝尔编程!")
\ No newline at end of file