update_slack_response.py

# Update slack response - handle initial post and streaming response
def update_slack_response(say, client, message_ts, channel_id, thread_ts, message_text):

    # If message_ts is None, we're posting a new message
    if message_ts is None:
        slack_response = say(
            text=message_text,
            thread_ts=thread_ts,
        )
        # Set message_ts
        message_ts = slack_response['ts']
    else:
        # We're updating an existing message
        client.chat_update(
            text=message_text,
            channel=channel_id,
            ts=message_ts,
        )

    # Return the message_ts
    return message_ts