#6814 has a number of outstanding comments to clarify and generalize the example code that the OP declined to make.

http://matplotlib.org/devdocs/examples/statistics/customized_violin_demo.html

Here is a list of elements to do:

• use numpy function instead of writing our own
• write helper function to deal with the repetitive axes manipulation
• Add a docstring sphinx-gallery compatible with a title and a description of the example.

[edited to fix link]
[edited to add the todo list]