[Swig-user] Python keyword arguments and overloaded functions

[Bradley L. <blo...@ma...>]

Hello,

I am using swig to generate interfaces from my header files with some type map guidance. For our swig generation of python binding I am passing the "-keyword" argument.

I have some overloaded procedural methods[1] like the following:

Image Resample ( const Image& image1, Transform transform = itk::simple::Transform(), InterpolatorEnum interpolator = itk::simple::sitkLinear, double defaultPixelValue = 0.0 );
Image Resample ( const Image& image1, const Image& referenceImage, Transform transform = itk::simple::Transform(), InterpolatorEnum interpolator = itk::simple::sitkLinear, double defaultPixelValue = 0.0 );
....

I can't use keyword arguments with these methods. Here is what I get:

In [1]: import SimpleITK as sitk

In [2]: img = sitk.Image()

In [3]: sitk.Resample(img, defaultPixelValue=1)
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-3-8a2b278d5bba> in <module>()
----> 1 sitk.Resample(img, defaultPixelValue=1)

TypeError: Resample() got an unexpected keyword argument 'defaultPixelValue'

Is this a bug or a missing feature? I very much would like this ability. we have a number of procedural methods with a large number of parameters which are going to be overloaded.

I am quite lazy when in python, so this is too many default parameters to have to specify.

Thanks,
Brad


[1] https://github.com/SimpleITK/SimpleITK/blob/master/Code/BasicFilters/include/sitkAdditionalProcedures.h#L45