A Wednesday 02 July 2008, Hans Fangohr escrigué:
> Hi Francesc,
>
> thank you for the very prompt reply; your explanation makes sense and
> I can see where this is coming from.
>
> Most likely, I will modify our code to strip off any white space in
> the relevant places: this is not particularly nice but will guarantee
> backwards compatibility with older files. This is only relevant for
> small sets of metadata so it is not performance critical.
>
> In this context: Is there any way to extract from a pytables.h5 file
> the information whether it was written with pytables1.0 or pytables
> 2.0? If I had that information, I could use tidy and lean code for
> the newer files.
Sure. Use the PYTABLES_FORMAT_VERSION attribute of the root. It has
the value "2.0" (or higher) starting with PyTables 2.0. Here it is an
example:
In [13]: f1=tables.openFile("tbl1.h5")
In [14]: f1.root._v_attrs.PYTABLES_FORMAT_VERSION
Out[14]: '1.6'
In [15]: f2=tables.openFile("tbl2.h5")
In [16]: f2.root._v_attrs.PYTABLES_FORMAT_VERSION
Out[16]: '2.0'
As you can see, this reports the version of the *format file* and not
the PyTables version.
Cheers,
--
Francesc Alted
Freelance developer
Tel +34-964-282-249
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