A step-by-step guide to building a chatbot in Python

build a chatbot in python

Moreover, from the last statement, we can observe that the ChatterBot library provides this functionality in multiple languages. Thus, we can also specify a subset of a corpus in a language we would prefer. Let us consider the following example of responses we can train the chatbot using Python to learn.


The reason is their incapability to understand human conversations completely. We have covered the NLTK library later on where we discuss how it is useful for creating chatbots. As you can see, it’s simple, it’s about adding the conversation lines to the context and passing it to the model every time we call it.

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The second step in the Python chatbot development procedure is to import the required classes. 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. In this example, we get a response from the chatbot according to the input that we have given. Let us try to build a rather complex flask-chatbot using the chatterbot-corpus to generate a response in a flask application. Any beginner-level enthusiast who wants to learn to build chatbots using Python can enroll in this free course.

In this way, you will prevent the discussion from coming to a standstill. Actually, this is a big advantage for us, but please pay attention and use this feature intelligently to bring the conversation to the right intent. In this article, we are going to talk about ReactJS and how it is increasingly becoming the most popular library for front end development. Component-driven development is an excellent strategy to accelerate the development of frontends and user interfaces. They’re there to sort out your banking queries, help with transactions, and offer money-smart advice, all at your convenience. Ok with the above libraries installed we are good to go with the coding part.

Essential Concepts to Learn before Building a Chatbot in Python

It should be ensured that the backend information is accessible to the chatbot. Finally, in the last line (line 13) a response is called out from the chatbot and passes it the user input collected in line 9 which was assigned as a query. On the other hand, an AI chatbot is one which is NLP (Natural Language Processing) powered. This means that there are no pre-defined set of rules for this chatbot. Instead, it will try to understand the actual intent of the guest and try to interact with it more, to reach the best suitable answer.

build a chatbot in python

After we are done setting up the flask app, we need to add two more directories static and templates for HTML and CSS files. Following is a simple example to get started with ChatterBot in python. With increasing advancements, there also comes a point where it becomes fairly difficult to work with the chatbots. The bot uses pattern matching to classify the text and produce a response for the customers. A standard structure of these patterns is “AI Markup Language”.

Interact with it by typing messages and questions in the console. Chatterbot is trained to search the closest analogous response by finding the closest analogous request made by users that is equivalent to the new request made. Then it selects a response from the already existing responses. The USP of chatterbot is that it enables developers to create their own dataset and structures at ease. The chatbot function takes statement as an argument that will be compared with the sentence stored in the variable weather.

These chatbots are often built using Python libraries such as NLTK and ChatterBot, which provide tools for processing and understanding human language. He came up with a conversational program that lets the user interact and participate in a conversation with the computer program. However, from there, chatbots have evolved immensely with the help of groundbreaking technologies, including artificial intelligence, natural language processing, and machine learning. A chatbot is a computer program that interacts with humans or simulates a human conversation with a machine via a written message or voice. It is programmed to work independently without the intervention of human operators.

Real-Time Speech Recognition and Voice-Enabled AI Chatbot Integration using BING and OpenAI

NLTK stands for Natural Language Toolkit and is a leading python library to work with text data. The first line of code below imports the library, while the second line uses the nltk.chat module to import the required utilities. If you want to deploy your chatbot on your own servers, then you will need to make sure that you have a strong understanding of how to set up and manage a server. This can be a difficult and time-consuming process, so it is important to make sure that you are fully prepared before embarking on this option. Regardless of IDE you must install the correct libraries and python version in your development environment for this to work. That said, there are many online tutorials on how to get started with Python.

  • Its versatility and an array of robust libraries make it the go-to language for chatbot creation.
  • A lot of methods require additional parameters (while using the sendMessage method, for example, it’s necessary to state chat_id and text).
  • The TimeLogicAdapter returns the current time when the input statement asks for it.
  • Together, these technologies create the smart voice assistants and chatbots we use daily.
  • There are many different use cases for chatbots, each requiring their own set of rules, intents, and conversational control.

We’ll use the token to get the last chat data, and then when we get the response, append the response to the JSON database. But remember that as the number of tokens we send to the model increases, the processing gets more expensive, and the response time is also longer. We will not be building or deploying any language models on Hugginface.

More from Spardha and Python in Plain English

Now, we will extract words from patterns and the corresponding tag to them. This has been achieved by iterating over each pattern using a nested for loop and tokenizing it using nltk.word_tokenize. The words have been stored in data_X and the corresponding tag to it has been stored in data_Y. Access to a curated library of 250+ end-to-end industry projects with solution code, videos and tech support. Okay, so now that you have a rough idea of the deep learning algorithm, it is time that you plunge into the pool of mathematics related to this algorithm. According to a Uberall report, 80 % of customers have had a positive experience using a chatbot.

For example, you can catch a particular intent and then trigger a custom action. Once you created the agent, let’s start by defining some intents through the Dialogflow interface. The first thing I suggest to do is always use the graphical interface on the right to test our real-time chatbot.


To be able to distinguish between two different client sessions and limit the chat sessions, we will use a timed token, passed as a query parameter to the WebSocket connection. In the code above, the client provides their name, which is required. We do a quick check to ensure that the name field is not empty, then generate a token using uuid4. To generate a user token we will use uuid4 to create dynamic routes for our chat endpoint. Since this is a publicly available endpoint, we won’t need to go into details about JWTs and authentication.

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As the number of instances increases in chatterbot, the accuracy of the responses made by chatterbot also increases. Rule-based chatbots, also known as scripted chatbots, were the earliest chatbots created based on rules/scripts that were pre-defined. For response generation to user inputs, these chatbots use a pre-designated set of rules. Therefore, there is no role of artificial intelligence or AI here. This means that these chatbots instead utilize a tree-like flow which is pre-defined to get to the problem resolution.

build a chatbot in python

In case we work on Google Colab, I think we only have to install two, OpenAI and panel. PyTelegramBotAPI offers using the @bot.callback_query_handler decorator which will pass the CallbackQuery object into a nested function. Let’s write a Python script which is going to implement the logic for specific currency exchange rates requests.

build a chatbot in python

They enable companies to provide customer support and another plethora of things. I think it’s worth making a parenthesis to explain in broad terms how this parameter works in a language generation model. The model builds the sentence by figuring out which word it should use, choosing it from a list of words that has a percentage of chances of appearing. With this brief explanation, I think we are ready to start creating our fast-food ordering chatbot. So, we will build a small ChatGPT that will be trained to act as a chatbot for a fast food restaurant. As you can see, pyTelegramBotApi uses Python decorators to initialize handlers for various Telegram commands.

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