Refactor code about python-andrewngml

[manvillej]

I want to implement the code style of google from this address:https://google.github.io/styleguide/pyguide.html

There are several things to implement, but I think the line size limit and the main() function are most important

[manvillej]

Since, I know how to run the pep8 standards:

pep8 [filename]

[manvillej]

updated ex1, ex1_multi, and ex1helper to mostly PEP8 in PEP8 branch

not fulfilling the line length limit though which may be a follow up when I more thoroughly refactor the code