import slack


@slack.RTMClient.run_on(event='message')
def say_hello(**payload):
    data = payload['data']
    web_client = payload['web_client']
    rtm_client = payload['rtm_client']
    if 'Hello' in data.get('text', []):
        channel_id = data['channel']
        thread_ts = data['ts']
        user = data['user']

        web_client.chat_postMessage(
            channel=channel_id, text=f"Hi <@{user}>!", thread_ts=thread_ts
        )


slack_token = (
    'xoxp-2443045155-231150911092-792886570180-0cf573954c0eeb7f40c7'
    '8bc6f5c959db'
)

# slack_token = os.environ["SLACK_API_TOKEN"]
rtm_client = slack.RTMClient(token=slack_token)
rtm_client.start()