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  1.  
  2. import sys
  3. import gc
  5. def test_matplotlib():
  6. from matplotlib import pylab
  7. pylab.plot(range(10))
  8. pylab.show()
  10. def test_matplotlib2():
  11. import Tkinter as Tk
  12. from matplotlib.figure import Figure
  13. from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
  14. from matplotlib.widgets import SubplotTool
  15. class Canvas(object):
  16. def draw(self, *args, **kwargs):
  17. pass
  18. class SubplotPars(object):
  19. left = 0
  20. bottom = 0
  21. right = 1
  22. top = 1
  23. wspace = 0
  24. hspace = 0
  25. class Dummy(object):
  26. subplotpars = SubplotPars()
  27. canvas = Canvas()
  28. def __init__(self):
  29. self.count = 0
  30. def subplots_adjust(self, *args, **kwargs):
  31. self.count += 1
  32. print('callback count', self.count)
  34. class MySubplotTool(SubplotTool):
  35. def __del__(self):
  36. print('in __del__')
  38. def create_sub(*args, **kwargs):
  39. dummy = Dummy()
  40. window = Tk.Tk()
  41. toolfig = Figure(figsize=(6,3))
  42. canvas = FigureCanvasTkAgg(toolfig, master=window)
  43. toolfig.subplots_adjust(top=0.9)
  44. tool = MySubplotTool(dummy, toolfig)
  45. canvas.show()
  46. canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)
  47. window = Tk.Tk()
  48. button = Tk.Button(master=window, text='press me', command=create_sub)
  49. button.pack()
  50. Tk.mainloop()
  51. print('1st gc.collect', gc.collect())
  52. print('2nd gc.collect', gc.collect())
  53. print('gc.garbage', gc.garbage)
  55. if __name__ == '__main__':
  56. opt = 0
  57. if len(sys.argv) > 1:
  58. opt = int(sys.argv[1])
  59. if opt == 0:
  60. test_matplotlib()
  61. elif opt == 1:
  62. test_matplotlib2()
  63.  
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