[cairo] since which version? cairo.Format

[Christoph Reiter]

On Tue, Dec 18, 2018 at 9:06 AM <buhtz at posteo.de> wrote:
> So this would do the trick I think.
>
> if cairo.version_info >= (1, 13, 0):
>     _surface_format = cairo.Format.RGB24,
> else:
>     _surface_format = cairo.FORMAT_RGB24

cairo.FORMAT_RGB24 is also available in newer versions.