python - Tkinter/matplotlib multiple active windows on osx -

i have script follows executes on windows machine

import matplotlib.pyplot plt import numpy np import tkinter  class main(tkinter.frame): #main window     def __init__(self, root): # initialise         tkinter.frame.__init__(self)         self.root = root           tkinter.button(self, text='new spots', command=self.newspots).grid()      def newspots(self):         x = np.random.rand(10)         y = np.random.rand(10)         plt.scatter(x,y)         plt.show()    if __name__=='__main__':     root = tkinter.tk()      app = main(root).grid()     root.mainloop() 

when running on windows, opens window simple button, , clicking button opens matplotlib viewer 10 dots plotted in random positions. each subsequent press of button adds further ten dots.

executing code on mac produces same initial window, , first press of button generates plot , opens viewer expected. however, becomes impossible interact original window (only controls on viewer work) until viewer window closed. how make behaviour on mac mirror on windows machine?

i found solution issue -- seems matplotlib defaults tkagg backend on windows (i'm unsure whether general windows thing, or specific whatever particular install on machine).

adding following lines top of script forces tkagg backend , leads same behaviour on both machines.

import matplotlib matplotlib.use("tkagg")