save project

diy2.py

@@ -8,7 +8,7 @@ while True:
         break    
         break    
     if name!=username: 
     if name!=username: 
         print('用户名错误')
         print('用户名错误')
+        continue
     if password != userpassword:
     if password != userpassword:
         print('密码错误')
         print('密码错误')
-    print("用户名和密码错误!请重新输入")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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