python - matplotlib figure canvas name -

i have gui built using pyqt4 use matplotlib (figurecanvas) plot several plots using multiple canvases (this intentional rather using subplots). each canvas use method:

self.canvas_xx.mpl_connect('scroll_event', self.on_mouse_scroll) 

where xx represents iteration of canvas signal perform action. want able reference canvas name rather using:

ylabel = event.inaxes.axes.get_ylabel().split(' ')[0] 

where use longer method of referncing ylabel name of each graph.

i looked under event method using: dir(event) , there method called "canvas", there no apparent method name of canvas.

any ideas?

i not quite sure mean name, can a reference canvas object via

event_canvas = event.inaxes.axes.figure.canvas 

and canvas events hashable, can use them keys in dict

other_thing = pre_populated_dict[event_canvas] 

to keep track of ever other data want given canvas in code.

in python there is, in general, not clean way names of references object (it can done, shouldn't).