conversation.py 文件源码

def filter_by_datetime(self, start_dt=datetime.min, end_dt=datetime.max):
        """
        Returns a copy of self after filtering self.messages by messages that
        lie in a datetime interval.

        Args:
            start_dt: A datetime object satisfying start_dt <= end_dt.
            end_dt: A datetime object satisfying start_dt <= end_dt.

        Returns:
            A Conversation object that is equal to self after filtering by
                messages whose datetimes are in the closed interval
                [start_dt, end_dt].

        Raises:
            EmptyConversationError: Filtering self.messages results in an empty
                list.
        """
        if start_dt > end_dt:
            raise ValueError("start_dt must be less than or equal to end_dt")
        message_filter = lambda x: x.timestamp >= start_dt and x.timestamp <= end_dt
        filtered = self.filter_conversation(message_filter=message_filter)
        return filtered