context.py 文件源码

def can_run(self, cmd) -> Tuple[bool, list]:
        """
        Checks if a command can be ran.

        :return: If it can be ran, and a list of conditions that failed.
        """
        conditions = getattr(cmd, "cmd_conditions", [])
        failed = []
        for condition in conditions:
            try:
                success = condition(self)
                if inspect.isawaitable(success):
                    success = await success
            except CommandsError:
                raise
            except Exception:
                failed.append(condition)
            else:
                if not success:
                    failed.append(success)

        if failed:
            return False, failed

        return True, []