Re: [Pytables-users] iterate over specific Tables

[Anthony S. <sc...@gm...>]

Hello Uwe,

Why don't you try something like:

bar = filter(x.description == VideoNode for x in f.walkNodes('/', 'Table'))

or

bar = filter(x.dtype == VideoNode._v_dtype for x in f.walkNodes('/',
'Table'))

to compare the dtype / description directly?

Be Well
Anthony
On May 18, 2012 8:00 AM, "Uwe Mayer" <uwe...@df...> wrote:

> Hi,
>
> I have several leaf nodes of the same table dtype:
>
> class VideoNode(tables.IsDescription):
>    ...
>
> Not all tables in the hdf5 file are of the same type, however. How do I
> iterate
> over all leafes which are tables of the above class, while ignoring tables
> with
> different signatures?
>
> i.e. I'd like to write something like:
> <code>
> f = tables.openFile(...)
> foo = f.walkNodes('/', classname='VideoNode')
> </code>
> which does not work because only the class name is "Table"...
>
> or
> <code>
> bar = filter(isinstance(x, VideoNode) for x in f.walkNodes('/', 'Table')))
> </code>
>
> which does not work, because x is never an instance of VideoNode.
>
> Any ideas?
>
> Thanks in advance
> Uwe
>
>
>
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