save project

diy1.py

@@ -7,7 +7,10 @@ while True:
     if name == username and password == userpassword:
     if name == username and password == userpassword:
         print("登陆成功!")
         print("登陆成功!")
         break
         break
-    print("用户名和密码错误!请重新输入")
+    if name != username:
+        print("用户名不存在，请重新输入!")
+    if password != userpassword:
+        print("密码输入有误，请重新输入!")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")