auto save

diy2.py

+i=3
 username = "python"
 userpassword = "123456"
 while True:
+    if i>0:
         name = input("请输入用户名:")
+        if name != username:
+            print("用户名错误!请重新输入") 
+            continue
+
         password = input("请输入密码:")
+        if password != userpassword:
+            print("密码错误!请重新输入")
+        i-=1
+            
         if name == username and password == userpassword:
             print("登录成功!")
             break 
-    print("用户名和密码错误!请重新输入")
+    else:
+        print("你的账户已被锁定，请一个小时以后再试")
+        exit()       
 print("欢迎来到贝尔编程!")
\ No newline at end of file