Update documentation for Python 3 (#435)
Update documentation for Python 3 (#435)

* Update documentation for Python 3

Given that Python 2 is out of support, the documenation examples should probably use Python 3 syntax (i.e. print as a function, input instead of raw_input) instead of Python 2 syntax.

* whitespace change

Co-authored-by: jtroussard <9626ccd29e8724e4fc2db74d5d914b5363f3eb55@gmail.com>
requests/requests-oauthlib