save project

diy1.py

@@ -6,6 +6,10 @@ while True:
 # 如果用户输入的账号、密码正确，提示登陆成功
     if username==name and userpassword==password:
         print("登陆成功")
+    if username!=name:
+        print("账号错误")
+    if userpassword!=password:
+        print("密码错误")
         break
     print("密码错误")
 print("欢迎")
\ No newline at end of file