app.py

# ------------------------------------------------
# instead of slack_bolt in requirements.txt
import sys

sys.path.insert(1, "..")
# ------------------------------------------------

import logging

logging.basicConfig(level=logging.DEBUG)

from slack_bolt import App

app = App()


@app.middleware  # or app.use(log_request)
def log_request(logger, body, next):
    logger.debug(body)
    return next()


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


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


@app.error
def global_error_handler(error, body, logger):
    logger.exception(error)
    logger.info(body)


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

# pip install slack_bolt
# export SLACK_SIGNING_SECRET=***
# export SLACK_BOT_TOKEN=xoxb-***
# python app.py