save project

diy2.py

@@ -17,3 +17,6 @@ while True:
     elif password!=userpassword:
         print("密码出错，请重新登入")
         n=n+1
+    elif name!=username and password!=userpassword:
+        print("用户名和密码都出错，请重新登入")
+        n=n+1      
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