tungwaiyip.info

home

about me

links

Blog

< December 2013 >
SuMoTuWeThFrSa
1 2 3 4 5 6 7
8 91011121314
15161718192021
22232425262728
293031    

past articles »

Click for San Francisco, California Forecast

San Francisco, USA

 

Getting Cython to work with Python 3.3 on Windows

I have spent a fair bit of time to get Cython to work with Python 3.3 on Windows. So I just add a note here in case anyone want a similar setup. These are the components I use:

  • Windows 7
  • Python 3.3 (Anaconda distribution)
  • Visual C++ 2010 Express

To install Python 3.3 version of Anaconda there is a twist. The Anaconda Windows installer (as of 2013-12) is of Python 2.7. You could add the Python 3.3 environment after Anaconda is installed. But then you will be adding the 3.3 packages on top of the 2GB base 2.7 installation. If you don't need 2.7, there is a way to save the disk space. Download and install the Miniconda3 installer. It should be a 32M base installer only. Note that I have only successfully used the x86 32 bit version. I would explain the problem of the 64 bit version later. Next run this to install the Python 3.3 Anaconda packages.

conda update conda
conda create -n py33 python=3.3 anaconda
activate py33

Previously I have tried to download miniconda and install individual packages as needed. But then I find that I did not save much disk space compare to the 2GB full Anaconda packages. So I rather save myself hassle and install everything.

Next you need a C compilers. The idea is your C compiler should be of the same version that compiles the Python interpreter. How do you find out what version of compiler is used? Notice when you start the Python interpreter, it output one line that says the system version. From this we can find out the what it is compiled from. The Anaconda Python version string looks like:

Python 3.3.3 |Anaconda 1.8.0 (32-bit)| (default, Dec 3 2013, 11:58:39) [MSC v.1600 32 bit (Intel)]

1600 is the MSVC version string. Divide it by 100 and then minus 6 gets you 10. This corresponds to Visual Studio 2010 Express. If you have Python 2.7, the version string reads 1500 and it corresponds to Visual Studio 2008 express. I found out this only after tracing the source code in msvc9compiler.py in the distutils packages.

Originally I have installed the 64 bit version of miniconda. In this case the version is like

Python 3.3.3 |Continuum Analytics, Inc.| (default, Dec 3 2013, 11:56:40) [MSC v.1600 64 bit (AMD64)] on win32

I don't know what is the significance of the label (AMD64) in there (my PC is Intel i7). But this prevent the msvc9compiler from associating with the correct compiler. It gives me a cryptic error when I tried compiling:

ValueError: ['path']

I have succeed only after I reinstall with the 32 bit miniconda. With this I am able to compile Cython's hello world example. I hope this helps.

2013.12.18 [] - comments

 

 

blog comments powered by Disqus

past articles »

 

BBC News

 

Ukraine war: Drone pilots mark targets for new offensive (18 Aug 2022)

 

Afghanistan: Deadly blast rips through crowded Kabul mosque (18 Aug 2022)

 

Sanna Marin: Finland PM partying video causes backlash (18 Aug 2022)

 

Rushdie suspect 'read two pages' of Satanic Verses (18 Aug 2022)

 

Man scales Blackpool Tower to capture Red Arrows selfie (18 Aug 2022)

 

Covid in China: Fish tested amid Xiamen outbreak (18 Aug 2022)

 

Salma al-Shehab: Concern for Saudi student jailed for 34 years over tweets (18 Aug 2022)

 

Cuba mourns firefighters killed in fuel depot blaze (18 Aug 2022)

 

Haiti: Spike in weapons smuggled into country from US (18 Aug 2022)

 

Algeria forest fires: At least 38 dead, emergency officials say (18 Aug 2022)

more »

 

SF Gate

 

These were the highest-paying Silicon Valley tech companies in 2021 (19 Jul 2022)

 

'This will be somewhat painful': Elon Musk talks Twitter takeover in extended interview at TED2022 Vancouver (14 Apr 2022)

 

Best Background Check Services in 2022, Top 13 People Finder Sites Reviewed (5 Apr 2022)

 

Better.com employees got severance checks before they were laid off (9 Mar 2022)

 

Apple joins other Bay Area tech giants in responding to Russian invasion of Ukraine (1 Mar 2022)

 

Uber will now show you how you’re rated by drivers (18 Feb 2022)

more »


Site feed Updated: 2022-Aug-18 09:00