Occasional error when closing all matplotlib windows in an ipython console

[David]

When I close all matplotlib windows from an ipython console using the following command

plt.close("all")

I occasionally get the following error, but it's not very reproducible:

Traceback (most recent call last):

  File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_qt4.py", line 156, in <lambda>

    lambda: self.close_event())

  File "/usr/lib/pymodules/python2.7/matplotlib/backend_bases.py", line 1564, in close_event

    self.callbacks.process(s, event)

RuntimeError: wrapped C/C++ object of %S has been deleted

I am using spyder 2.2.0dev, matplotlib 1.1.1, Qt 4.8.2 via PyQt4 (API v2) 4.9.3

I'm not sure whether this is a spyder issue or a matplotlib issue. Has anybody else noticed this?

[Carlos Córdoba]

Hi David,

I have a couple of questions for you:

1. Do you see the same behavior while you're using the Python console?

2. Which version of IPython are you using?

Cheers,
Carlos

El 12/11/12 22:42, David escribió:

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[David]

Hi Carlos,

I'm using Ipython 0.13.1. I don't use the regular python console any more, so I don't know if the problem occurs there. Because it's quite a rare problem I'd have to use the regularly in order to see the error. I'll try switching over to the regular console for a while and see if the error occurs there.

cheers

David

[David]

Hello Carlos,

I can confirm that the problem also happens with the regular python console, so I guess it's not an IPython issue.

cheers

David

[David]

I can now reproduce this reliably, and it also happens outside of spyder, so I guess it's a problem with matplotlib.

[Carlos Córdoba]

Thanks David for digging into it. Maybe an upgrade to the newly released matplotlib 1.2 could solve the problem for you?

Cheers,
Carlos

El 20/11/12 17:42, David escribió:

To view this discussion on the web visit https://groups.google.com/d/msg/spyderlib/-/49ycHB5-MvsJ.