An inconsistency in the definition of save_figure between different backends is
causing this problem.
The GTK backends use
def save_figure(self, button):
but the tkagg, qt, qt4, and macosx backends use
def save_figure(self):
so without the second argument. The line that is causing the error is
self.canvas.toolbar.save_figure(self.canvas.toolbar)
in backend_bases.py. This assumes that the save_figure method is defined as in
the GTK backends.
As far as I can tell, the GTK backend has the second argument because that is
what pygtk passes when save_figure is called as a callback. The second argument
is not actually used inside the method.
So I would suggest the following:
In backend_bases.py, change the offending line to
self.canvas.toolbar.save_figure()
and the backend_gtk, change the definition of the save_figure method to
def save_figure(self, button-None):
Any objections, anybody?
--Michiel
--- On Sun, 2/14/10, David Arnold <[email protected]> wrote:
> From: David Arnold <[email protected]>
> Subject: [Matplotlib-users] Easy come easy go
> To: [email protected]
> Date: Sunday, February 14, 2010, 11:36 PM
> All,
>
> This example:
> http://matplotlib.sourceforge.net/examples/event_handling/keypress_demo.html
>
> Raises this exception o my Macbook when the key 's' is
> pressed:
>
> The debugged program raised the exception unhandled
> TypeError
> "save_figure() takes exactly 1 argument (2 given)"
> File:
> /Library/Frameworks/Python.framework/Versions/6.0.0/lib/python2.6/site-packages/matplotlib/backend_bases.py,
> Line: 1703
>
> David
> ------------------------------------------------------------------------------
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