save project

diy1.py

@@ -6,5 +6,9 @@ while True:
     if username==name and userpassword==password:
     if username==name and userpassword==password:
         print("登陆成功！")
         print("登陆成功！")
         break
         break
-    else:
-        print("登陆失败，请重新输入账户和密码！")
+    if username!=name and userpassword==password:
+        print("账户名错误，请重新输入账户名！")  
+    if userpassword!=password and username==name:
+        print("密码错误，请重新输入密码！")  
+    if username!=name and userpassword!=password:
+        print("账户名和密码都错误错误，请重新输入账户名和密码！")
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