It's very simple to use and superbly easy to implement software for natural language processing problems.
I have been using it for the last few months and I have never looked back. Another best thing about the PyNLPL is that its open source hence no need of paying a huge amount for getting the license to use it.
And apart from that the documentation for this open source python library is updated and explained in a very good manner that makes the life of developers like me super easy.
It also works with FoLiA XML (Format for Linguistic Annotation) which is the most important feature of this library that makes me dependable on this library every day for solving NLP problem statements.
I personally didn't find any flaws in this library. By far the best Natural language processing library I have ever used for developing software for natural language processing problems.
If you are working on python to solve a natural language processing problem them PyNLPl is the library to be used. I highly recommend using this library.
I have been using it in my laboratory for solving natural language processing problems where I need to develop automated virtual assistants that can help a person in doing day to day simple work like turn on the lights, set alarm, answer a simple query like check the weather for a requested location, etc.