python - Exit graph window using matplotlib.pyplot in terminal? -

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i wrote command-line program in python using matplotlib.pyplot , argparse. input data , scatterplot i'm looking , window pops graph. cool how can exit window terminal ?

i ended adding argparse argument --exit sys.exit() it's not working...when ctrl+z stops script graph window stays open.

how can exit matplotlib.pyplot graph window terminal? 

#!/usr/bin/env python2.7 import matplotlib.pyplot plt import argparse, sys   def main():     #(i). add arguments     parser = argparse.argumentparser(description=__doc__)      parser.add_argument('--exit', action = 'store_true', = 'exit graph')      options = parser.parse_args()      x_coordinates = [1,2,3,4,5]     y_coordinates = [3,3,3,3,3]     size_map = [20,20,20,20,20]      plt.scatter(x_coordinates,y_coordinates, s = size_map)     plt.show()      if options.exit:         sys.exit()  #initiate if __name__ == '__main__': main()


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