save project

diy2.py

@@ -6,9 +6,9 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    if name !=username
-    print("用户名错误!请重新输入!")
+    if name !=username:
+        print("用户名不存在,请重新输入!")
         continue
     if password != userpassword:
-        print("密码输入有误，请重新输入！")
+        print("密码输入有误,请重新输入！")
 print("欢迎来到贝尔编程")
\ No newline at end of file