Here’s the wiki page on embedding cython Assuming you installed python to C:\Python31 and you want to use Microsoft Compiler. smalltest1.py – is the file you want to compile. test.exe – name of the executable. You need to set the environmental variables for cl. C:\Python31\python.exe C:\Python31\Scripts\cython.py smalltest1.py –embed cl.exe /nologo /Ox /MD /W3 /GS- /DNDEBUG … Read more
A reply with what I can take from your message. The use of Python objects in Cython is possible but limited as soon as you cdef some parts. Try by “un”-cdefing the dict. The error you have suggests that you have an expression that is x[y] where x is a tuple and y an int. … Read more
Warning: a Cython core developer’s opinion ahead. I almost always recommend Cython over ctypes. The reason is that it has a much smoother upgrade path. If you use ctypes, many things will be simple at first, and it’s certainly cool to write your FFI code in plain Python, without compilation, build dependencies and all that. … Read more
You just have some minor errors in the interface definition. The following worked for me: from libc.stdlib cimport malloc import numpy as np cimport numpy as np np.import_array() ctypedef np.int32_t DTYPE_t cdef extern from “numpy/arrayobject.h”: void PyArray_ENABLEFLAGS(np.ndarray arr, int flags) cdef data_to_numpy_array_with_spec(void * ptr, np.npy_intp N, int t): cdef np.ndarray[DTYPE_t, ndim=1] arr = np.PyArray_SimpleNewFromData(1, &N, … Read more
Look here for an answer. The basic idea is that you want cpython.array.array and cpython.array.clone (not cython.array.*): from cpython.array cimport array, clone # This type is what you want and can be cast to things of # the “double[:]” syntax, so no problems there cdef array[double] armv, templatemv templatemv = array(‘d’) # This is fast … Read more
It sounds like GCC 4.7.0 has finally removed the deprecated -mno-cygwin option, but distutils has not yet caught up with it. Either install a slightly older version of MinGW, or edit distutils\cygwinccompiler.py in your Python directory to remove all instances of -mno-cygwin.
People are tempted to do this because it’s fairly easy to do for the simplest case (one module, no dependencies). @ead’s answer is good but honestly pretty fiddly and it is handling the next simplest case (two modules that you have complete control of, no dependencies). In general a Python program will depend on a … Read more
First off, I should note that it’s impossible to compile a single .so file with sub packages using Cython. So if you want sub packages, you’re going to have to generate multiple .so files, as each .so can only represent a single module. Second, it doesn’t appear that you can compile multiple Cython/Python files (I’m … Read more
Update if you have Visual Studio 2022 no need to download VS Build Tools, as you can use for the same purpose Visual Studio Installer (located in VS2022 start menu folder) As pointed out by JfredoJ You need windows 10 SDK, Download visual studio build tools and install Visual C++ Build tools core features. MSVC … Read more