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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _tasks_status(set_tasks):
 """ Given a grouped set of tasks, returns a LuigiStatusCode """

    if set_tasks["ever_failed"]:
        if not set_tasks["failed"]:
            return LuigiStatusCode.SUCCESS_WITH_RETRY
        else:
            if set_tasks["scheduling_error"]:
                return LuigiStatusCode.FAILED_AND_SCHEDULING_FAILED
            return LuigiStatusCode.FAILED
    elif set_tasks["scheduling_error"]:
        return LuigiStatusCode.SCHEDULING_FAILED
    elif set_tasks["not_run"]:
        return LuigiStatusCode.NOT_RUN
    elif set_tasks["still_pending_ext"]:
        return LuigiStatusCode.MISSING_EXT
    else:
        return LuigiStatusCode.SUCCESS