Matplotlib

wikipedia:matplotlib (2003)

• https://matplotlib.org/

Matplotlib created a temporary config/cache directory at /var/www/.config/matplotlib because the default path (/tmp/matplotlib-b33qbx_v) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support 
multiprocessing.

pip install matplotlib

Related

• Seaborn

See also

• matplotlib
• NumPy, Chainer, Matplotlib, Seaborn
• Pandas