auto save

diy2.py

@@ -2,13 +2,14 @@ username = "p"
 userpassword = "1"
 while True:
     name = input("请输入用户名:")
+    if name != username:
+        print('用户名不存在！请重新输入')
     password = input("请输入密码:")
+    
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    if name != username:
-        print('用户名不存在！请重新输入')
-        continue
+    
     if password != userpassword:
         print('密码错误')
     print("用户名和密码错误!请重新输入")