Does matplotlib axes know which figure it is in?

Question

Can I use something like

ax.get_figure()

to get the figure which the ax is in.

Answer 1

yes, Axes need to know what figure they are is for the transform stack to work properly. To get at this information, Axes object have an attribute:

fig = ax.figure

which is the figure the axes is in. As a side note, you can not easily move axes between figures or artists between axes for exactly this reason.