Fix previous cleanup

'base' no longer defined, replace with what I'm guessing base was.

Signed-off-by: Andy Grover <agrover@redhat.com>
Remove 'return None'

Python returns None by default.

Signed-off-by: Andy Grover <agrover@redhat.com>
Add update_mapping helper function. Fix syntax errors

Signed-off-by: Andy Grover <agrover@redhat.com>
Add gitignore

Signed-off-by: Andy Grover <agrover@redhat.com>