Hi Jean-Charles, AFAIK there are no standard converters for the numpy scalar types to C++ types. In pyrap it is solved by having explicit converters for numpy scalar types to C++ types (see pyrap.googlecode.com).
Cheers, Ger >>> QUILLET Jean-Charles 05/11/10 11:38 AM >>> Hi, I've got this problem I cannot solve. I've a c++ applicationfrom which I create an array sending to python this string: anArray = numpy.array((1, 2, 3)) After extracting the symbol "anArray" from thedirectory in a boost::python::object, I'm trying to extract the values in C++: int val = bp::extract(anArray[0]); It doesn't work and raise the error: "TypeError: No registered converter was able toproduce a C++ rvalue of type int from this Python object of type numpy.int32" What is going on ? I'm using python 2.6, last version ofNumpy 1.4.1 with boost 1.38 on Linux. Looking on the list, it seems thatsomeone had this very problem but he didn't get any answer. http://article.gmane.org/gmane.comp.python.c++/11279/match=typeerror+no+registered+converter+able+produce+c%2b%2b+rvalue+type+int+python+object+numpy+int32 Hopefully I'll have more chance ! Any idea greatly appreciated, Jean-Charles
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