POST a JSON payload to a Slack Incoming Webhook using Python requests

slack_webhook_post.py

'''
This is an example of how to send data to Slack webhooks in Python with the
requests module.

Detailed documentation of Slack Incoming Webhooks:
https://api.slack.com/incoming-webhooks
'''
import requests

# Set the webhook_url to the one provided by Slack when you create the webhook at 
# https://my.slack.com/services/new/incoming-webhook/
webhook_url = 'https://hooks.slack.com/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX'
slack_data = {'text': 'Message from Python! :spaghetti:'}

response = requests.post(webhook_url, json=slack_data)
if response.status_code != 200:
    raise ValueError(
        'Request to slack returned an error %s, the response is:\n%s'
        % (response.status_code, response.text)
    )