Added Boolean operators and lowered line lengths

Added Bool operators and and or, and lowered some line lengths.  Also shifted some notes above the code lines to keep with same style and help readability.  Also added a note on list comprehension.  Also added adding to dictionary.
[python/en] Added Bool operators

Bool operators
[python3/en] Bool operators

Bool operators
[python/en] Added Bool operators

Modified Bool operators
Merge pull request #750 from xksteven/master

[python3/en] Added Boolean operators + lowered line lengths