Here are some good tutorials, demonstrations, and even courseware from renowned university programs, many of which include
Python examples:
Speech and Language Processing (https://web.stanford.edu/~jurafsky/slp3/ed3book.pdf) by David Jurafsky and James H. Martin—The next book you should read if you’re serious about NLP. Jurafsky and Martin are
more thorough and rigorous in their explanation of NLP concepts. They have whole chapters on topics that we largely ignore,
like finite state transducers (FSTs), hidden Markhov models (HMMs), part-of-speech (POS) tagging, syntactic parsing, discourse
coherence, machine translation, summarization, and dialog systems.
MIT Artificial General Intelligence course 6.S099 (https://agi.mit.edu) led by Lex Fridman Feb 2018—MIT’s free, interactive (public competition!) AGI course. It’s probably the most thorough and rigorous free course on artificial intelligence engineering you can find.