save project

diy2.py

 username = "python"
+i=3
 userpassword = "123456"
 while True:
+    if i>0:
         name = input("请输入用户名:")
         password = input("请输入密码:")
+        i-=1
         if name == username and password == userpassword:
             print("登录成功!")
             break
 
-        elif name != username:
+        if name != username:
             print("用户名不存在，请重试")
-        else password != userpassword:
+        if password != userpassword:
             print("密码错误，请重试")
+    else:
+        print("次数已用尽，封号3650天")
+        exit()
 print("欢迎来到贝尔编程!")