Bug: Fix searcher_resp_queue not available sometimes

[richard1122]

The graph may not be ready when we try to access it for the first time. Sometimes the code returned by LLM (gpt4o for example), especially the first line graph = WebSearchGraph(), has not been executed yet.
This PR adds a retry mechanism when accessing graph, which partly fixes issue #36 #17.

[liujiangning30]

Thank you so much for your PR! I appreciate your contribution to the project.

I've reviewed the code and have a few comments and suggestions for improvement:

1. continue runs the risk of making the execute_code function fall into a dead loop. By using raise without any arguments in the except block of func run_command, it will re-raise the caught exception, preserving the original traceback information.

[richard1122]

Hi @liujiangning30, I'm not quite understand your comment, like

By using raise without any arguments in the except block of func run_command, it will re-raise the caught exception, preserving the original traceback information.

Are you suggesting to add a limit (like 5 times) of retry, then raise an exception?

[liujiangning30]

Yes

Hi @liujiangning30, I'm not quite understand your comment, like

By using raise without any arguments in the except block of func run_command, it will re-raise the caught exception, preserving the original traceback information.

Are you suggesting to add a limit (like 5 times) of retry, then raise an exception?

[datalee]

我这边正好相反，我这边的case一直都获取不到结果，是因为python执行器的问题，而且建议上面加一个重试次数的限制！https://github.com/InternLM/MindSearch/issues/36