Changed code according to pep8
 deleted keyword.pyc
tab removed.
update global.py
Comments updated.
Added .gitignore
Deleted unwanted ~ files.
Revert "Added .gitignore"

This reverts commit 84b6093cb97530bbffecf1a096e8236bac4d046c.
Merge branch 'master' into fix_merge_commit
Update printmax.py
Update keyword.py
Update keyword.py
Update using_sys.py
Merge pull request #7 from sugandha7/fix_merge_commit

Fix merge commit