Get Python Matplotlib Radiobutton selection

问题

In Python, I can create Matplotlib Radiobuttons using code like this:

rb = RadioButtons(pl.axes([0.01,0.5,0.08,0.14]),('A','B','C',))

How do I get the index of the currently active radio button outside the callback function?

来源：https://stackoverflow.com/questions/24778441/get-python-matplotlib-radiobutton-selection