Re: [Matplotlib-users] Garbage collection?

[John H. <jdh...@ac...>]

>>>>> "John" == John Hunter <jdh...@ac...> writes:

    John> Good -- this indicated matplotlib proper is not leaking, so
    John> it is a figure management problem.  You may want to inspect
    John> _pylab_helpers to see if it is storing references you don't
    John> want it to.

Here is a little demo to help you if you want to poke into the pylab
helpers data structures.  Note you should not manipulate these
structures directly, but through the pylab API

In [2]: import matplotlib._pylab_helpers as ph

In [3]: ph.Gcf.figs
Out[3]: {}

In [4]: figure()
Out[4]: <matplotlib.figure.Figure instance at 0xb5b91e4c>

In [5]: ph.Gcf.figs
Out[5]: {1: <matplotlib.backends.backend_gtkagg.FigureManagerGTKAgg
instance at 0xb5b91f4c>}

In [6]: figure()
Out[6]: <matplotlib.figure.Figure instance at 0xb5b9180c>

In [7]: ph.Gcf.figs
Out[7]:
{1: <matplotlib.backends.backend_gtkagg.FigureManagerGTKAgg instance
at 0xb5b91f4c>,
 2: <matplotlib.backends.backend_gtkagg.FigureManagerGTKAgg instance
 at 0xb5b91b4c>}

In [8]: close(1)

In [9]: ph.Gcf.figs
Out[9]: {2: <matplotlib.backends.backend_gtkagg.FigureManagerGTKAgg
instance at 0xb5b91b4c>}

JDH