Dear Jean-Francois,
When you do report an error having to do with the SageMath
installation (and not about "how to use SageMath"), it is
strongly advised to state precisely what is your setup.
SageMath installs on dozens of operating systems in half
dozen ways. Each installation setup comes with its own
troubles. More precisely, your problem has a chance to
be solved if you state clearly
1. what is your operating system
2. which SageMath version (here you said clearly 9.0)
3. Which steps did you follow to install SageMath
Assuming that for 3 you use the windows binary (please
confirm), I reported the issue on
https://github.com/sagemath/sage-windows/issues/42
It would be nice to know 1 as well.
Best
Vincent
Le 18/01/2020 à 11:00, Jean-François Ingenbleek a écrit :
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. '
help is welcome
Big thanks
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