auto save

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
-    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!")
-    print("用户名和密码错误!请重新输入")
-print("欢迎来到贝尔编程!")
+    name = input("用户名")
+    password = input("密码")
+    if username == name and userpassword == password:
+        print("登录成功！")
+        break
+    print("输入的用户名或密码有误！")
\ No newline at end of file
+print("欢迎来到贝尔编程！")
\ No newline at end of file