[C++-sig] Re: Creating an array in C++
Philip Austin
paustin at eos.ubc.ca
Thu Feb 26 04:41:48 CET 2004
David Abrahams writes:
> Does this work?
>
> handle<> m = ::PyImport_Import(str("numarray").ptr())
> object numarray(m);
> numeric::array theArray(make_tuple(300),numarray.attr("UInt8"));
Unfortunately, without the keyword it interprets the shape array as data:
>>> theArray=numarray.array((300,),numarray.UInt8)
>>> theArray
array([44], type=UInt8)
>
> You have to take theArray.ptr() to get the python object back if you
> want access to its raw memory.
Yes, that adds a dependency on PyArrayObject, but there's really no
alternative to memcpy if you're moving big arrays back and fort.
Phil
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