[cctbxbb] Deprecation warning?

[Graeme.Winter at diamond.ac.uk]

Hi Nat,

Interestingly I added this 

import warnings
warnings.filterwarnings("ignore", category=DeprecationWarning)

and it did not make the warnings go away… even though I tried both where I import matplotlib and also in the top of the main() routine.

That seems odd to me - any ideas?

Many thanks,

Graeme

On 7 Aug 2012, at 18:49, Nathaniel Echols wrote:

> On Tue, Aug 7, 2012 at 3:04 AM,  <Graeme.Winter at diamond.ac.uk> wrote:
>> Is there a way to avoid this?
>> 
>> Using matplotlib.pyplot.
>> 
>> /Users/graeme/svn/cctbx_plus/base/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backends/backend_wx.py:1382: wxPyDeprecationWarning: Using deprecated class PySimpleApp.
>>  wxapp = wx.PySimpleApp()
> 
> You can do this:
> 
> import warnings
> warnings.filterwarnings("ignore", category=DeprecationWarning)
> 
> But that's somewhat dangerous.  How are you starting pyplot?  I don't
> get this error when I try something trivial like this:
> 
> nat at clover:~> phenix.wxpython
>>>> import matplotlib.pyplot as plt
>>>> f = plt.figure()
>>>> p = plt.plot([1,2,3],[4,5,6])
>>>> plt.show()
> 
> But if I do this, I get the same warning:
> 
>>>> import wx
>>>> app = wx.PySimpleApp()
> __main__:1: wxPyDeprecationWarning: Using deprecated class.
> 
> So I suspect matplotlib is suppressing the warning somehow.
> Alternately, it looks as though if a wx.App instance has already been
> created, matplotlib will use that instead.
> 
> -Nat
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