Cython with python 3.3

Question

I have been using python 3.3

This is an old problem as I searched, and this is what I did:

helloworld.pyx

print("Hello world!")

Then, in ipython, I did:

import pyximport; pyximport.install()
import helloworld

It says:

ImportError: Building module helloworld failed: ["ValueError: ['path']\n"]

The same problem did not happen with python 2.7

I googled this: https://github.com/cython/cython/wiki/64BitCythonExtensionsOnWindows and realized that I have to install Windows SDK for Windows 7 and .NET Framework 4. As it comes with the VC++2010 Redistributables, I did not install the redistributables alone again. I thought I had everything ready, but the import error still remains.

Could anyone please help me solve it?

Thank you!

-Shawn

Do you really need pyximport? It seems the error messages might be more intuitive if you build an extension module as a separate step, and then import it normally. — dstromberg
– dstromberg, Commented Jan 21, 2014 at 3:14

ashkan · Accepted Answer · 2014-05-28 01:09:12Z

1

install Windows 7 SDK, then open cmd run: "C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\SetEnv.Cmd" /Release /x64

then run: python setup.py install

answered May 28, 2014 at 1:09

ashkan

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thengineer · Accepted Answer · 2014-01-21 18:26:08Z

1

I was having the same issue and the same environment (win7 64bit, python-3.3.3 64bit).

I have

installed the Windows 7 SDK as described on the wiki cython wiki as you did,
applied the patch (msvccompiler9_33.diff) from this python bug,
fixed the above patch by defining a missing variable as described here
Installed MS Visual C++ Express 2010 (seems to be required)
Updated the Windows 7 SDK to include the "Windows Headers and Libraries", "Tools" and of course the "Visual C++ Compilers" the MSVC++2010 redistributable.

And now I can compile and import the helloworld.py just fine.

answered Jan 21, 2014 at 18:26

thengineer

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