I have to do a lot of plots.
I would like to put an identifier into each plot that identifies the way the plot was made.
This identifier then could point to a database that contains the script and extra information.
Here is an example: http://depth-first.com/articles/2007/08/08/never-draw-the-same-molecule-twice-viewing-image-metadata
The interface would be:
fig.savefig("example.pdf",{"creator": "2009-11-13"})