save project

m.py

@@ -6,5 +6,9 @@ while True:
     if x==username and y==userpassword:
         print("密码正确")
         break
-    else:
-        print("密码错误")
\ No newline at end of file
+    if x != username:
+        input("用户名不存在")
+    if y != userpassword:
+        input("密码错误")
+        
+    
\ No newline at end of file