app.py

import os
from slack_bolt import App

# Initializes your app with your bot token and signing secret
app = App(
    token=os.environ.get("SLACK_BOT_TOKEN"),
    signing_secret=os.environ.get("SLACK_SIGNING_SECRET"),
)


# Listens to incoming messages that contain "hello"
# To learn available listener method arguments,
# visit https://slack.dev/bolt-python/api-docs/slack_bolt/kwargs_injection/args.html
@app.message("hello")
def message_hello(message, say):
    # say() sends a message to the channel where the event was triggered
    say(
        blocks=[
            {
                "type": "section",
                "text": {"type": "mrkdwn", "text": f"Hey there <@{message['user']}>!"},
                "accessory": {
                    "type": "button",
                    "text": {"type": "plain_text", "text": "Click Me"},
                    "action_id": "button_click",
                },
            }
        ],
        text=f"Hey there <@{message['user']}>!",
    )


@app.action("button_click")
def action_button_click(body, ack, say):
    # Acknowledge the action
    ack()
    say(f"<@{body['user']['id']}> clicked the button")


# Start your app
if __name__ == "__main__":
    app.start(port=int(os.environ.get("PORT", 3000)))