⚠️ Important Notice ⚠️

🔄 Still Work In Progress 🔄

This project is still in alpha, and may have bugs in it. Also, the public APIs can be changed until the v1 release. We are keen to hear your feedback. Please feel free to submit an issue!

Bolt for Python (still in alpha)

A Python framework to build Slack apps in a flash with the latest platform features. Check the samples to know how to use this framework.

Setup

python -m venv env
source env/bin/activate
pip install slack_bolt

First Bolt App (app.py)

Create an app by calling a constructor, which is a top-level export.

import logging
logging.basicConfig(level=logging.DEBUG)

from slack_bolt import App

# export SLACK_SIGNING_SECRET=***
# export SLACK_BOT_TOKEN=xoxb-***
app = App()

# Events API: https://api.slack.com/events-api
@app.event("app_mention")
def event_test(say):
    say("What's up?")

# Interactivity: https://api.slack.com/interactivity
@app.shortcut("callback-id-here")
# @app.command("/hello-bolt-python")
def open_modal(ack, client, logger, body):
    # acknowledge the incoming request from Slack immediately
    ack()
    # open a modal
    api_response = client.views_open(
        trigger_id=body["trigger_id"],
        view={
            "type": "modal",
            "callback_id": "view-id",
            "title": {
                "type": "plain_text",
                "text": "My App",
            },
            "submit": {
                "type": "plain_text",
                "text": "Submit",
            },
            "blocks": [
                {
                    "type": "input",
                    "block_id": "b",
                    "element": {
                        "type": "plain_text_input",
                        "action_id": "a"
                    },
                    "label": {
                        "type": "plain_text",
                        "text": "Label",
                    }
                }
            ]
        })
    logger.debug(api_response)

@app.view("view-id")
def view_submission(ack, view, logger):
    ack()
    # Prints {'b': {'a': {'type': 'plain_text_input', 'value': 'Your Input'}}}
    logger.info(view["state"]["values"])

if __name__ == "__main__":
    app.start(3000)  # POST http://localhost:3000/slack/events

Run the Bolt App

export SLACK_SIGNING_SECRET=***
export SLACK_BOT_TOKEN=xoxb-***
python app.py

# in another terminal
ngrok http 3000

AsyncApp Setup

If you prefer building Slack apps using asyncio, you can go with AsyncApp instead. You can use async/await style for everything in the app. To use AsyncApp, AIOHTTP library is required for asynchronous Slack Web API calls and the default web server.

python -m venv env
source env/bin/activate
pip install slack_bolt aiohttp

Import slack_bolt.async_app.AsyncApp instead of slack_bolt.App. All middleware/listeners must be async functions. Inside the functions, all utility methods such as ack, say, and respond requires await keyword.

from slack_bolt.async_app import AsyncApp

app = AsyncApp()

@app.event("app_mention")
async def event_test(body, say, logger):
    logger.info(body)
    await say("What's up?")

@app.command("/hello-bolt-python")
async def command(ack, body, respond):
    await ack()
    await respond(f"Hi <@{body['user_id']}>!")

if __name__ == "__main__":
    app.start(3000)

Starting the app is exactly the same with the way using slack_bolt.App.

export SLACK_SIGNING_SECRET=***
export SLACK_BOT_TOKEN=xoxb-***
python app.py

# in another terminal
ngrok http 3000

If you want to use another async Web framework (e.g., Sanic, FastAPI, Starlette), take a look at the built-in adapters and their samples.

Feedback

We are keen to hear your feedback. Please feel free to submit an issue!

License

The MIT License

bluegroundltd/bolt-python