How To Build A Slack Bot In Python

Opening Remarks:

Slack is a popular messaging platform that allows teams to communicate and collaborate effectively. Building a Slack bot can be a great way to automate tasks, provide information, or even just have fun with your teammates. In this article, we will guide you through the process of building a Slack bot in Python.

Setting Up Your Environment

Before we begin, let’s set up our environment. We will need to install some dependencies and create a virtual environment for our project. Here are the steps to follow:

  1. Install Python 3.7 or higher
  2. Install pip using the command python -m pip install --upgrade pip
  3. Create a virtual environment using the command python -m venv env
  4. Activate the virtual environment by running source env/bin/activate on Linux or env\Scripts\activate.bat on Windows

Installing Slack API Libraries

Next, we need to install the necessary libraries for interacting with the Slack API. Here are the steps to follow:

  1. Run pip install slackclient to install the Slack client library
  2. Run pip install requests to install the Requests library for making HTTP requests

Creating a Bot User

To create a bot user, we need to follow these steps:

  1. Go to and sign in with your Slack account
  2. Click on “Create an App” and select the workspace where you want to install the bot
  3. Give your app a name and description, and choose “Bot User” as the type of app
  4. Copy the Bot Token from the “App Credentials” section and save it in a secure location

Creating a Slack Client

Now that we have our bot user, let’s create a Slack client to interact with the API. Here are the steps to follow:

  1. Import the Slack client library using import slackclient
  2. Create an instance of the Slack client using sc = slackclient.SlackClient(token=BOT_TOKEN), where BOT_TOKEN is the token you copied earlier

Responding to Messages

To respond to messages, we need to listen for events and then send a response. Here are the steps to follow:

  1. Import the Requests library using import requests
  2. Create a function that listens for events using def on_message(msg):
  3. Inside the function, check if the message is directed at the bot using if msg["type"] == "message" and msg["subtype"] == "bot_message":
  4. If the message is directed at the bot, send a response using sc.api_call("chat.postMessage", channel=msg["channel"], text="Hello! How can I assist you today?")


Building a Slack bot in Python can be a fun and useful way to automate tasks, provide information, or just have some fun with your teammates. By following the steps outlined in this article, you should be able to create your own Slack bot in no time.