ChatterBot is a machine-learning based conversational dialog engine build in Python which makes it possible to generate responses based on collections of known conversations. The language independent design of ChatterBot allows it to be trained to speak any language.

An example of typical input would be something like this:

user: Good morning! How are you doing?
bot: I am doing very well, thank you for asking.
user: You're welcome.
bot: Do you like hats?

An untrained instance of ChatterBot starts off with no knowledge of how to communicate. Each time a user enters a statement, the library saves the text that they entered and the text that the statement was in response to. As ChatterBot receives more input the number of responses that it can reply and the accuracy of each response in relation to the input statement increase. The program selects the closest matching response by searching for the closest matching known statement that matches the input, it then returns the most likely response to that statement based on how frequently each response is issued by the people the bot communicates with.

This package can be installed from PyPi by running:

pip install chatterbot

from chatterbot import ChatBot
chatbot = ChatBot("Ron Obvious")

# Train based on the english corpus
chatbot.train("chatterbot.corpus.english")

# Get a response to an input statement
chatbot.get_response("Hello, how are you today?")

Chatterbot comes with a data utility module that can be used to train chat bots. At the moment there is two languages, English and Portuguese training data in this module. Contributions of additional training data or training data in other languages would be greatly appreciated. Take a look at the data files in the chatterbot/corpus directory if you are interested in contributing.

# Train based on the english corpus
chatbot.train("chatterbot.corpus.english")

# Train based on english greetings corpus
chatbot.train("chatterbot.corpus.english.greetings")

# Train based on the english conversations corpus
chatbot.train("chatterbot.corpus.english.conversations")

Corpus contributions are welcome! Please make a pull request.

View the documentation for using ChatterBot in the project wiki.

For examples, see the examples directory in this project's repository.

There is also an example Django project using ChatterBot.

Have you created something cool using ChatterBot?
Please add your creation to the list of projects using ChatterBot in the wiki.

ChatterBot's built in tests can be run using nose.

See the nose documentation for more information.

See release notes for changes https://github.com/gunthercox/ChatterBot/releases