[Matplotlib-devel] Response to architecture query

[Eric Firing]

On 2016/02/09 6:52 AM, Benjamin Root wrote:
> The Tk backend, oddly enough, is implemented in C/C++ (don't ask me why,
> I haven't a clue)

Only a rather small part of it.  And there is a similar C++ component 
for the GTKagg backend.

Eric