Looks like a bug to me, thanks. http://trac.cython.org/cython_trac/ticket/732
On Tue, Sep 13, 2011 at 11:22 AM, Hagen Fürstenau <ha...@zhuliguan.net> wrote: > Hi, > > I'm new to Cython, so I don't know if this is a bug, a known limitation, or > a misunderstanding on my part, but the following simple example produces C > code that fails to compile: > > ----------------------------------------------------------- > import numpy > cimport numpy > > def f(numpy.ndarray[numpy.int32_t, ndim=1] a not None, i): > cdef numpy.ndarray[numpy.int32_t, ndim=1] b > > b = numpy.ones(10, dtype=numpy.int32) > b[0] *= a[i] > > > a = numpy.array([1, 2, 3], dtype=numpy.int32) > f(a, 1) > ----------------------------------------------------------- > > Running this on Cython 0.15 and Python 3.2.2 with > > $ python -c 'import pyximport; pyximport.install(); import x' > > I get a compiler error, the essential part of which seems to be > > /export/home/hagenf/.pyxbld/temp.linux-x86_64-3.2/pyrex/x.c:1105: error: > invalid operands to binary * (have ‘__pyx_t_5numpy_int32_t’ and ‘struct > PyObject *’) > > The problem is in the line "b[0] *= a[i]". Replacing this with "b[0] = b[0] > * a[i]" solves it. As does typing i as an int (which of course is a good > idea anyway). > > Cheers, > Hagen > > _______________________________________________ > cython-devel mailing list > cython-devel@python.org > http://mail.python.org/mailman/listinfo/cython-devel > _______________________________________________ cython-devel mailing list cython-devel@python.org http://mail.python.org/mailman/listinfo/cython-devel
