On Saturday, January 18, 2020 at 10:00:06 AM UTC, Jean-François Ingenbleek
wrote:
>
> G = Graph({'A':['B','C']})
> G.show()
>
> give this strange message
>
> /opt/sagemath-9.0/local/lib/python3.7/site-packages/matplotlib/font_manager.py:281:
> UserWarning: Matplotlib is building the font cache using fc-list. This may
> take a moment.
> 'Matplotlib is building the font cache using fc-list. '
>
>
this should happen just once over the lifetime of your installation.
If this happens every time matplotlib is imported then it's probably
https://stackoverflow.com/questions/34771191/matplotlib-taking-time-when-being-imported
HTH
Dima
>
>
> help is welcome
>
> Big thanks
>
>
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