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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 _get_objects(self, o_type):
 """Get an object list from the scheduler Returns None if the required object type (`o_type`) is not known or an exception is raised. Else returns the objects list :param o_type: searched object type :type o_type: str :return: objects list :rtype: alignak.objects.item.Items """

        if o_type not in [t for t in self.app.sched.pushed_conf.types_creations]:
            return None

        try:
            _, _, strclss, _, _ = self.app.sched.pushed_conf.types_creations[o_type]
            o_list = getattr(self.app.sched, strclss)
        except Exception:  # pylint: disable=broad-except
            return None

        return o_list