{"id":73520,"date":"2019-12-10T14:43:07","date_gmt":"2019-12-10T09:13:07","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=73520"},"modified":"2025-07-29T20:54:33","modified_gmt":"2025-07-29T15:24:33","slug":"python-chatbot-project","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/python-chatbot-project\/","title":{"rendered":"Python Chatbot Project – Learn to build your first chatbot using NLTK & Keras"},"content":{"rendered":"

Hey Siri, What’s the meaning of Life?<\/em><\/p>\n

As per all the evidence, it’s chocolate for you.<\/em><\/p>\n

Soon as I heard this reply from Siri, I knew I found a perfect partner to savour my hours of solitude. From stupid questions to some pretty serious advice, Siri has been always there for me.<\/p>\n

How amazing it is to tell someone everything and anything and not being judged at all. A top class feeling it is and that’s what the beauty of a chatbot is.<\/p>\n

This is the 9th project in the 20 Python projects series by DataFlair and make sure to bookmark other interesting projects:<\/p>\n

    \n
  1. Fake News Detection Python Project<\/a><\/li>\n
  2. Parkinson\u2019s Disease Detection Python Project<\/a><\/li>\n
  3. Color Detection Python Project<\/a><\/li>\n
  4. Speech Emotion Recognition Python Project<\/a><\/li>\n
  5. Breast Cancer Classification Python Project<\/a><\/li>\n
  6. Age and Gender Detection Python Project<\/a><\/li>\n
  7. Handwritten Digit Recognition Python Project<\/a><\/li>\n
  8. Chatbot Python Project<\/li>\n
  9. Driver Drowsiness Detection Python Project<\/a><\/li>\n
  10. Traffic Signs Recognition Python Project<\/a><\/li>\n
  11. Image Caption Generator Python Project<\/a><\/li>\n<\/ol>\n

    What is Chatbot?<\/h3>\n

    A chatbot is an intelligent piece of software that is capable of communicating and performing actions similar to a human. Chatbots are used a lot in customer interaction, marketing on social network sites and instantly messaging the client. There are two basic types of chatbot models based on how they are built; Retrieval based and Generative based models.<\/p>\n

    \"Python<\/a><\/p>\n

    1. Retrieval based Chatbots<\/h4>\n

    A retrieval-based chatbot uses predefined input patterns and responses. It then uses some type of heuristic approach to select the appropriate response. It is widely used in the industry to make goal-oriented chatbots where we can customize the tone and flow of the chatbot to drive our customers with the best experience.<\/p>\n

    2. Generative based Chatbots<\/h4>\n

    Generative models are not based on some predefined responses.<\/p>\n

    They are based on seq 2 seq neural networks. It is the same idea as machine translation. In machine translation, we translate the source code from one language to another language but here, we are going to transform input into an output. It needs a large amount of data and it is based on Deep Neural networks.<\/p>\n

    About the Python Project – Chatbot<\/h3>\n

    In this Python project with source code, we are going to build a chatbot using deep learning techniques. The chatbot will be trained on the dataset which contains categories (intents), pattern and responses. We use a special recurrent neural network (LSTM) to classify which category the user\u2019s message belongs to and then we will give a random response from the list of responses.<\/p>\n

    Let\u2019s create a retrieval based chatbot using NLTK, Keras, Python, etc.<\/p>\n

    Download Chatbot Code & Dataset<\/h3>\n

    The dataset we will be using is \u2018intents.json\u2019. This is a JSON file that contains the patterns we need to find and the responses we want to return to the user.<\/p>\n

    Please download python chatbot code & dataset from the following link:\u00a0Python Chatbot Code & Dataset<\/a><\/strong><\/p>\n

    Prerequisites<\/h3>\n

    The project requires you to have good knowledge of Python, Keras, and Natural language processing (NLTK)<\/strong><\/em><\/a>. Along with them, we will use some helping modules which you can download using the python-pip command.<\/p>\n

    pip install tensorflow, keras, pickle, nltk<\/pre>\n
    How to Make Chatbot in Python?<\/h3>\n
    Now we are going to build the chatbot using Python but first, let us see the file structure and the type of files we will be creating:<\/p>\n
    \"Types<\/a><\/p>\n