[Pygui] Convert RGBA to BGRA using standard library? (Greg Ewing)

[David Cortesi]

> Can anyone think of an efficient way to convert a string
> full of RGBA image data to BGRA, using only what's available
> in the standard library?
>

ImageMagick, the venerable graphic toolbox, claims to do this conversion,
and there are versions of it that can be loaded as python libs. Follow the
links at  www.imagemagick.org
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