[wxPython-dev] 20070802 test build uploaded

[Mike Rooney]

R'bot wrote:
> Hi,
>
> A new test build of wxPython has been uploaded.  
>
>    Version: 2.8.4.2.20070802
>    URL:     http://wxPython.wxcommunity.com/preview/20070802
>    Changes: http://wxPython.wxcommunity.com/preview/20070802/CHANGES.html
>   


"Added some SWIG magic that allows wx C++ lists to be exposed to 
wxPython as sequence-like wrappers around the real list, instead of 
making a Python list that is a copy of the real list as was done before. 
These sequence-like objects support indexing, iteration and containment 
tests ("obj in seq") but not anything that would modify the sequence. If 
you need to have a real list object like before you can pass the 
sequence to Python's list() function to convert it."

Nice, I like where this is going! The containment tests are a step up to 
be sure, but there doesn't appear to be a way to get the index. Is this 
possible? ( I realize of course that I can loop over it manually and 
discover it this way).

 >>> children = sizer.GetChildren()
 >>> sizerItem in children #good!
True
 >>> children.index(sizerItem) #oh no, I guess it has to be a list
Traceback (most recent call last):
 ...
AttributeError: 'SizerItemList' object has no attribute 'index'
 >>> sizerItem in list(children) #but then containment fails
False
 >>> list(children).index(sizerItem) #and this as well
Traceback (most recent call last):
 ...
ValueError: list.index(x): x not in list

As you see I can turn it into a Python list to get the index method but 
then the containment test fails as well as the index then.

Thanks,
- Mike