save project

diy2.py

@@ -6,9 +6,11 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    if name != username:
-        print("用户名不存在")
-        continue
+    elif name != username:
+        print("用户名不存在,请重新输入!")
+    else :
+        print("密码输入错误,请重新输入!")
+       
     if password != userpassword:
         print("密码不正确")