save project

diy2.py

@@ -10,6 +10,5 @@ while True:
         print("用户名错误！请重新输入")
     if password!=userpassword:
         print("密码错误，请重新输入")
-    
-    print("用户名和密码错误!请重新输入")
+        continue
 print("欢迎来到贝尔编程!")
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