Re: [Swig-user] c++ python multiple return values

[FermiPhysics <ant...@ya...>]

Thomas Hrabe wrote:
> 
> Hi,
> 
> it seems there is a bug in swig and python >2.6 .
> Please forward me a sollution to this problem, but I am experiencing the
> same problems as paul before.
> 
> I am using 
> python 2.6.2
> swig 1.3.39
> 
> These are the first rows of the module generated by python for my project.
> Runs perfectly with python 2.5.4
> 
> from sys import version_info
> if version_info >= (2,6,0):
>     def swig_import_helper():
>         from os.path import dirname
>         import imp
>         fp = None
>         try:
>             fp, pathname, description = imp.find_module('_pytom_volume',
> [dirname(__file__)])
>         except ImportError:
>             import _pytom_volume
>             return _pytom_volume
>         if fp is not None:
> #HERE IS THE ERROR
>             try:
>                 _mod = imp.load_module('_pytom_volume', fp, pathname,
> description)
>             finally:
>                 fp.close()
>                 return _mod
> #HERE IS THE ERROR
> 
>     _pytom_volume = swig_import_helper()
>     del swig_import_helper
> else:
>     import _pytom_volume
> del version_info
> 
> ....
> 
> The 'catch' or in python 'except' part is missing here.
> The code generated is thus wrong and the interpreter goes boink uppon
> loading the module.
> I write this in reference to some other webpage, however, here's the
> bug...
> 
> Has it been fixed yet, anybody having an idea?
> 
> Cheers,
> Thomas
> 
> 

When I got this error, I manually inserted an except:
except ImportError:
    fp.close()
    import _modulename
    return _modulename

Now, if you try to import and get an error, it will probably be because
_modulename won't import, which is the same reason why the imp.load_module()
failed and raised the error before the inserted except clause.

This will not solve the problem, but it may help to diagnose it.

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