How to create a chatbot in Python

Natural language processing (NLP) is one of the most promising fields of artificial intelligence that uses natural languages to enable human interactions with machines. There are two main approaches to NLP: – rule-based methods, – statistical methods, i.e., methods related to machine learning. There are several exciting Python libraries for NLP, such as Natural Language Toolkit (NLTK), spaCy, TextBlob, etc. A chatbot is a computer software able to interact with humans using a natural language. They usually rely on machine learning, especially on NLP. Apple's Siri, Amazon's Alexa, Google Assitant, and Microsoft's Cortana are some well-known examples of software able to process natural languages.