importmatplotlibmatplotlib.use('GTK3Agg')# or 'GTK3Cairo'importgiimportmatplotlib.pyplotaspltgi.require_version('Gtk','3.0')fromgi.repositoryimportGtkfig,ax=plt.subplots()ax.plot([1,2,3],'ro-',label='easy as 1 2 3')ax.plot([1,4,9],'gs--',label='easy as 1 2 3 squared')ax.legend()manager=fig.canvas.manager# you can access the window or vbox attributes this waytoolbar=manager.toolbarvbox=manager.vbox# now let's add a button to the toolbarbutton=Gtk.Button(label='Click me')button.show()button.connect('clicked',lambdabutton:print('hi mom'))toolitem=Gtk.ToolItem()toolitem.show()toolitem.set_tooltip_text('Click me for fun and profit')toolitem.add(button)pos=8# where to insert this in the toolbartoolbar.insert(toolitem,pos)# now let's add a widget to the vboxlabel=Gtk.Label()label.set_markup('Drag mouse over axes for position')label.show()vbox.pack_start(label,False,False,0)vbox.reorder_child(toolbar,-1)defupdate(event):ifevent.xdataisNone:label.set_markup('Drag mouse over axes for position')else:label.set_markup(f'<span color="#ef0000">x,y=({event.xdata},{event.ydata})</span>')fig.canvas.mpl_connect('motion_notify_event',update)plt.show()

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