slack-notify.py

import sys
import os
import dotenv
from slackclient import SlackClient

dotenv.load_dotenv('/path/to/.env')


def post_slack(text: str, channel: str):
    slack_token = os.environ['SLACK_API_TOKEN']
    sc = SlackClient(slack_token)

    return sc.api_call(
      'chat.postMessage',
      channel=channel,
      text=text
    )


if __name__ == '__main__':
    if len(sys.argv) != 2:
        print('usage: python', sys.argv[0], 'TEXT')
        exit(1)
    ret = post_slack(text=sys.argv[1], channel='mychannel')
    if not ret['ok']:
        print('SLACK_API_ERROR: ', ret['error'])
    else:
        print('SUCCESS')