Generate bigrams with NLTK

Question

I am trying to produce a bigram list of a given sentence for example, if I type,

    To be or not to be

I want the program to generate

Answer 1

The following code produce a bigram list for a given sentence

>>> import nltk
>>> from nltk.tokenize import word_tokenize
>>> text = "to be or not to be"
>>> tokens = nltk.word_tokenize(text)
>>> bigrm = nltk.bigrams(tokens)
>>> print(*map(' '.join, bigrm), sep=', ')
to be, be or, or not, not to, to be