[C++-sig] No to_python (by-value) converter found for C++ type
vishal.bayskar at nechclst.in
Tue May 25 06:03:32 CEST 2010
I am facing a problem while creating python binding for some code in my
I have created a sample program for that and attached the same to this mail.
Here after the generation of python bindings when I try to use that it fails
No to_python (by-value) converter found for C++ type: CallResult<Simple>
Where as for this example code it even does not shows warning that
CallResult<Simple> is unknown type, still I used
sizeof and even in the generated code I could find CallResult<Simple>
Attached tar file contains:
structEx.cpp (cpp code)
ex.py (python code generator script)
exWithSizeOf.py (python code generator script using size of)
t.py(example python script to use the generated binding )
g++ -fpic -shared -o testModule.so -I/usr/include/python2.4/ -L/usr/lib64/
-lboost_python testModule.cpp (command for compilation)
Can you please suggest what I am missing in this case.
After some analysis I found, in my case python bindings generated contains
typedef bp::class_< CallResult< Simple >, boost::noncopyable >
I could not understand why boost::noncopyable is added as an extra template
parameter and this seems to be be
culprit in my case.
I don't think my class contains object of any class which is derived from
Can you please suggest, what I am missing in this case?
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