Numpy-stl not installable under Windows 7 and Python 3

[DietBru]

The numpy-stl package cannot be installed with Python 3 under Windows, since Cython does not
fully support Python 3. (At least v2.2.3 has this problem.) In the
"stl/_speedups.pyx" file the statement in line 4
IF UNAME_SYSNAME == u"Windows":
is not evaluated correctly.
Cheers, dietrich

PS: Tested on Window7, Python 3.6, Cython 0.25.2 (Anaconda 4.3)

[wolph]

Can you give the current develop branch a try? It should work even when the speedups module cannot be build correctly.

[DietBru]

That did the trick (Interestingly, I did not see any warning while installing).

[wolph]

Glad it worked.

The pure python version is more than fast enough in most cases and if you need more speed than I would recommend the binary stl files anyhow.

[gigaj0ule]

I found personally that creating a one line file:

#include <io.h>

Named unistd.h in ./stl/ solved the install issue for me.

Error I was experiencing was something along the lines of:

_speedups.c
stl/_speedups.c(449): fatal error C1083: Cannot open include file: 'unistd.h': No such file or directory
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\BIN\\x86_amd64\\cl.exe' failed with exit status 2

[David-Herman]

I also wanted to report that I had a similar error under windows and Python 2.7.10 and the solution from @adammunich worked from me. Thanks. The numpy-stl package was v2.2.3 as well.

[wolph]

I finally had access to a windows machine with visual studio to test for myself and it seems that cython doesn't support python 3 on windows yet, or at least... not fully. The UNAME_SYSNAME constant isn't defined on windows it seems.