Natural language processing, or NLP for short, is best described as "AI for speech and text." The magic behind voice commands, speech and text translation, sentiment analysis, text summarization, and many other linguistic applications and analyses, natural language processing has been improved dramatically through deep learning. The Python language provides a convenient front-end to all varieties of machine learning including NLP. In fact, there is an embarrassment of NLP riches to choose from in the Python ecosystem. In this article we'll explore each of the NLP libraries available for Python--their use cases, their strengths, their weaknesses, and their general level of popularity.