Cython fatal error C1083: 无法打开包括文件: “numpy/arrayobject.h”: No such file or directory

from cython.parallel import prange import numpy as np cimport numpy as np def calculate_z(int maxiter, double complex[:] zs,double complex[:] cs): """ Calculate output list using Julia update rule """ cdef unsigned int i, length cdef double complex z, c cdef int[:] output = np.empty(len(zs),dtype=np.int32) length = len(zs) with nogil: for i in prange(length, schedule="guided"): z = zs[i] c = cs[i] output[i] = 0 while (z.real * z.real + z.imag * z.imag) < 4 and output[i] < maxiter: z = z * z + c output[i] += 1 return output

此时用python setup.py build_ext --inplace编译时报错如下：

解决方法：

添加 include_dirs=[np.get_include()]

from distutils.core import setup
from distutils.extension import Extension
from Cython.Distutils import build_ext
import numpy as np

setup(
    cmdclass={'build_ext': build_ext},
    ext_modules=[Extension('calculate', ['cythonfnS.pyx'])],
    include_dirs=[np.get_include()])