Jupyter notebook
$ sudo apt install msttcorefonts -qq
$ rm ~/.cache/matplotlib -rf
import matplotlib
import matplotlib.pyplot as plt
plt.style.available
matplotlib.matplotlib_fname()
#'/tool/venv_jupyter/lib/python3.10/site-packages/matplotlib/mpl-data/matplotlibrc'
!ls /tool/venv_jupyter/lib/python3.10/site-packages/matplotlib/mpl-data
!ls /tool/venv_jupyter/lib/python3.10/site-packages/matplotlib/mpl-data/stylelib
multi kernals
$ jupyter kernelspec list
python -m ipykernel install --name "jupyter_ve36" --display-name "Py3.6"