AI Chatbot Complete Guide to build your AI Chatbot with NLP in Python

Monday, February 6th 2023.

For example, this can be an effective, lightweight automation bot that an inventory manager can use to query every time he/she wants to track the location of a product/s. This is where the chatbot becomes intelligent and not just a scripted bot that will be ready to handle any test thrown at them. The main package that we will be using in our code here is the Transformers package provided by HuggingFace.


The next step is to create a chatbot using an instance of the class “ChatBot” and train the bot in order to improve its performance. Training the bot ensures that it has enough knowledge, to begin with, particular replies to particular input statements. In the above snippet of code, we have imported two classes – ChatBot from chatterbot and ListTrainer from chatterbot.trainers. Now that the setup is ready, we can move on to the next step in order to create a chatbot using the Python programming language. Another major section of the chatbot development procedure is developing the training and testing datasets.

Bag-of-Words(BoW) Model

Let’s start by setting up our virtual environment and installing PyTorch and nltk. Microsoft Bot Framework — Developers can kick off with various templates such as basic language understanding, Q&As, forms, and more proactive bots. The Azure bot service provides an integrated environment with connectors to other SDKs.

  • Ultimately we will need to persist this session data and set a timeout, but for now we just return it to the client.
  • We use this client to add data to the stream with the add_to_stream method, which takes the data and the Redis channel name.
  • You have to re-run the training whenever this file is modified.
  • The following are the steps for building an AI-powered chatbot.
  • All you need to do is define functionality with special parameters (depending on the chatbot’s library).
  • The tf.keras API allows us to mix and match different API styles.

And you’ll need to make many decisions that will be critical to the success of your app. You can also swap out the database back end by using a different storage adapter and connect your Django ChatterBot to a production-ready database. But if you want to customize any part of the process, then it gives you all the freedom to do so. Line 10 concatenates the regex patterns that you defined in lines 6 to 9 into a single pattern. The complete pattern matches all the metadata that you want to remove. Alternatively, you could parse the corpus files yourself using pyYAML because they’re stored as YAML files.

Understanding the Chatbot

Logic adapters determine the logic for how a response to a given query is selected. If multiple adapters are used, the bot will return the response with the highest calculated confidence value. If multiple adapters return the same confidence, the first adapter from the adapter list will be chosen.

Is developing a chatbot easy?

Any beginner who wishes to kickstart their development journey can begin with chatbot platforms because they are basic, easy to use, and don’t require any coding experience; you just need to understand how to drag and drop works.

We can create our GUI with tkinter, a Python library that allows us to create custom interfaces. The full code is on the GitHub repository, but I’m going to walk through the details of the code for the sake of transparency and better understanding. We stemmed the words and also removed the duplicate words from the list of words. Here the Lancaster Stemmer algorithmis used to reduce words into their stem. After the installation, you may want to download the ‘Punkt’ model from NLTK corpora. Huggingface provides us with an on-demand limited API to connect with this model pretty much free of charge.

Chatbot in Python

Moreover, the ML algorithms support the bot to improve its performance with experience. In the past few years, chatbots in the Python programming language have become enthusiastically admired in the sectors of technology and business. These intelligent bots are so adept at imitating natural human languages and chatting with humans that companies across different industrial sectors are accepting them. From e-commerce industries to healthcare institutions, everyone appears to be leveraging this nifty utility to drive business 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.


We will begin ai chatbot pythoning a Python chatbot by importing all the required packages and modules necessary for the project. We will also initialize different variables that we want to use in it. Moreover, we will also be dealing with text data, so we have to perform data preprocessing on the dataset before designing an ML model.

Related Tutorials

Next, to run our newly created Producer, update and the WebSocket /chat endpoint like below. We will use the aioredis client to connect with the Redis database. We’ll also use the requests library to send requests to the Huggingface inference API. In the next part of this tutorial, we will focus on handling the state of our application and passing data between client and server. In the src root, create a new folder named socket and add a file named

Our experts can work as a part of your dedicated development team, deliver a project at a fixed price, or calculate time and materials for your project. Ensure thorough testing of your product’s security and performance at different stages of the software development lifecycle. Build a strong in-house software testing team with the assistance of Apriorit’s QA experts. Botsify — User-friendly drag-and-drop templates to create bots.

How to build a Python Chatbot from Scratch?

This has led to a massive reduction in labor cost and increased the efficiency of customer interaction. Another amazing feature of the ChatterBot library is its language independence. The library is developed in such a manner that makes it possible to train the bot in more than one programming language.


Line 15 first splits the file content string into list items using .split(“\n”). This breaks up cleaned_corpus into a list where each line represents a separate item. Then, you convert this list into a tuple and return it from remove_chat_metadata(). Lines 12 and 13 open the chat export file and read the data into memory. All of this data would interfere with the output of your chatbot and would certainly make it sound much less conversational. A fork might also come with additional installation instructions.

  • You can apply a similar process to train your bot from different conversational data in any domain-specific topic.
  • As we move to the final step of creating a chatbot in Python, we can utilize a present corpus of data to train the Python chatbot even further.
  • Next, we trim off the cache data and extract only the last 4 items.
  • It’s responsible for choosing a response from the fewest possible words whose cumulative probability exceeds the top_p parameter.
  • The token created by /token will cease to exist after 60 minutes.
  • In this Repository, I upload my Research and Development Projects which I have done in Bachelor’s Degree ( ).

Tokenize each sentence and add START_TOKEN and END_TOKEN to indicate the start and end of each sentence. Chatbots have become extremely popular in recent years and their use in the industry has skyrocketed. They have found a strong foothold in almost every task that requires text-based public dealing. They have become so critical in the support industry, for example, that almost 25% of all customer service operations are expected to use them by 2020. You might already have noticed that it is not so convenient to always start so many services. Therefore we will introduce Docker and Docker compose for all our services so that we can run the whole application with just one command .

How do I make an AI Assistant in Python?

The query for the assistant can be manipulated as per the user's need. Speech recognition is the process of converting audio into text. This is commonly used in voice assistants like Alexa, Siri, etc. Python provides an API called SpeechRecognition to allow us to convert audio into text for further processing.

We create a function called send() which sets up the basic functionality of our chatbot. If the message that we input into the chatbot is not an empty string, the bot will output a response based on our chatbot_response() function. We’re creating a giant nested list which contains bags of words for each of our documents. We have a feature called output_row which simply acts as a key for the list. We then shuffle our training set and do a train-test-split, with the patterns being the X variable and the intents being the Y variable.

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Then we can pick some random responses from the list of responses. We are sending a hard-coded message to the cache, and getting the chat history from the cache. When you run python in the terminal within the worker directory, you should get something like this printed in the terminal, with the message added to the message array.


For this, computers need to be able to understand human speech and its differences. According to IBM, organizations spend over $1.3 trillion annually to address novel customer queries and chatbots can be of great help in cutting down the cost to as much as 30%. This function helps to create a bag of words for our model, Now let’s create a chat function that ties all this together. It does not have any clue who the client is (except that it’s a unique token) and uses the message in the queue to send requests to the Huggingface inference API. Lastly, we will try to get the chat history for the clients and hopefully get a proper response.

  • Anyone interested in gaining a better knowledge of conversational artificial intelligence will benefit greatly from this article.
  • Having this clarity helps the developer to create genuine and meaningful conversations to ensure meeting end goals.
  • ChatterBot uses the default SQLStorageAdapter and creates a SQLite file database unless you specify a different storage adapter.
  • This has led to a massive reduction in labor cost and increased the efficiency of customer interaction.
  • Beyond learning from your automated training, the chatbot will improve over time as it gets more exposure to questions and replies from user interactions.
  • This timestamped queue is important to preserve the order of the messages.

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