auto save

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
+i=3
 while True:
 while True:
+    if i>0:       
         name = input("请输入用户名:")
         name = input("请输入用户名:")
         password = input("请输入密码:")
         password = input("请输入密码:")
+        i-=1
         if name == username and password == userpassword: 
         if name == username and password == userpassword: 
             print("登录成功!")
             print("登录成功!")
             break           
             break           
-         name = input("请输入用户名:")
         password = input("请输入密码:")
         password = input("请输入密码:")
         if name == username and password == userpassword: 
         if name == username and password == userpassword: 
             print("登录成功!")
             print("登录成功!")
             break
             break
         if name !=username:
         if name !=username:
             input("请重新输入用户名:")
             input("请重新输入用户名:")
+            continue
         if password !=userpassword:
         if password !=userpassword:
             input("请输重新入密码:")
             input("请输重新入密码:")
-
+    else: 
+        print("已锁定"):
+exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file