Building a rule-based chatbot in Python

The more plentiful and high-quality your training data is, the better your chatbot’s responses will be. Gain insights into image-processing methodologies and algorithms, using machine learning and neural networks in Python. Recall that if an error is returned by the OpenWeather API, you print the error code to the terminal, and the get_weather() function returns None. In this code, you first check whether the get_weather() function returns None. If it doesn’t, then you return the weather of the city, but if it does, then you return a string saying something went wrong. The final else block is to handle the case where the user’s statement’s similarity value does not reach the threshold value.

Natural language Processing is a necessary part of artificial intelligence that employs natural language to facilitate human-machine interaction. You can add as many key-value pairs to the dictionary as you want to increase the functionality of the chatbot. The updated and formatted dictionary is stored inkeywords_dict. Theintentis the key and thestring of keywordsis the value of the dictionary. Once our keywords list is complete, we need to build up a dictionary that matches our keywords to intents. We also need to reformat the keywords in a special syntax that makes them visible to Regular Expression’s search function.

Step 1: Create a Chatbot Using Python ChatterBot

From e-commerce industries to healthcare institutions, everyone appears to be leveraging this nifty utility to drive building a chatbot in python advantages. In the following tutorial, we will understand the chatbot with the help of the Python programming language and discuss the steps to create a chatbot in Python. Unlike their rule-based kin, AI based chatbots are based on complex machine learning models that enable them to self-learn.

Is building a chatbot hard?

Coding a chatbot that utilizes machine learning technology can be a challenge. Especially if you are doing it in-house and start from scratch. Natural language processing (NLP) and artificial intelligence algorithms are the hardest part of advanced chatbot development.

Collect and analyze data – data can be collected and analyzed quicker from the chatbot sessions which improves customer experience. Lastly, we will try to get the chat history for the clients and hopefully get a proper response. If the token has not timed out, the data will be sent to the user. Now, when we send a GET request to the /refresh_token endpoint with any token, the endpoint will fetch the data from the Redis database.

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In 1994, Michael Mauldin was the first to coin the term “chatterbot” as Julia. AI-based Chatbots are a much more practical solution for real-world scenarios. In the next blog in the series, we’ll be looking at how to build a simple AI-based Chatbot in Python. If a match is found, the current intent gets selected and is used as the key to theresponsesdictionary to select the correct response. Hello
Here, we first defined a list of wordslist_wordsthat we will be using as our keywords. We used WordNet to expand our initial list with synonyms of the keywords.

Besides, you can fine-tune the transformer or even fully train it on your own dataset. The read_only parameter is responsible for the chatbot’s learning in the process of the dialog. If it’s set to False, the bot will learn from the current conversation. If we set it to True, then it will not learn during the conversation. Fine-tuning is a way of retraining the model’s output layers on your specific dataset so the model can learn industry-related conversation patterns alongside general ones.

Since its knowledge and training are still very limited, we have to provide it time and give more training data to train it further. In this python chatbot tutorial, we’ll use exciting NLP libraries and learn how to make a chatbot in Python from scratch. To simulate a real-world process that you might go through to create an industry-relevant chatbot, you’ll learn how to customize the chatbot’s responses. You’ll do this by preparing WhatsApp chat data to train the chatbot. You can apply a similar process to train your bot from different conversational data in any domain-specific topic.

Because the industry-specific chat data in the provided WhatsApp chat export focused on houseplants, Chatpot now has some opinions on houseplant care. It’ll readily share them with you if you ask about it—or really, when you ask about anything. In this example, you assume that it’s called “chat.txt”, and it’s located in the same directory as


These bots are extremely limited and can only respond to queries if they are an exact match with the inputs defined in their database. If you’re not interested in houseplants, then pick your own chatbot idea with unique data to use for training. Repeat the process that you learned in this tutorial, but clean and use your own data for training.


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