D14912: Bindings: Make generator forward compatible with Python 3

[Stefan Brüns]

bruns added a subscriber: arojas.

REPOSITORY
  R240 Extra CMake Modules

REVISION DETAIL
  https://phabricator.kde.org/D14912

To: bruns, #frameworks
Cc: arojas, kde-frameworks-devel, kde-buildsystem, michaelh, ngraham, bruns