Natural Language Toolkit(NLTK), an open source library which simplifies the implementation of Natural Language Processing(NLP) in Python is introduced. It is useful for getting started with NLP and also for research/teaching.
19. Import import math The import keyword is used to tell Python, that we need the ‘math’ module. This statement makes all the functions in this module accessible in the program.
20. Using Modules – An Example print math. sqrt( 100 ) sqrt is a function math is a module math.sqrt(100) returns 10 This is being printed to the standard output