In this tutorial I’m going to to build a chatbot for WhatsApp using the Twilio API for WhatsApp and the Flask framework for Python.
It is a simple chatbot that recognizes two keywords in messages sent by the user and reacts to them. If the user writes anything that contains the word quote, then the chatbot will return a random famous quote. If instead the message has the word cat, then a random cat picture will be returned. If both quote and cat are present in the message, then the bot will respond with a quote and a cat picture together. :)
Create a new virtual environment by python3 -m venv your_env_name and install pip. Then install depedenties in requirements.txt file.
Then run the file python3 whatsapp-bot.py. Thereafter, use ngtok to expose your application to the external internet. Type ngrok http 5000. Copy the 'https' url and append /bot route at the end of the link and paste it in the webhook section in twillio programmable sms Whatsapp section.