auto save

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 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
     if name != username:
     if name != username:
-            print("用户名输入错误,请重新输入")
-            continue
+        print("用户名输入错误")
     if password != userpassword:
     if password != userpassword:
-            print("密码输入错误,请重新输入")
-            exit()
+        print("密码输入错误")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")