On 09/06/2013 06:34 AM, Stefan Behnel wrote:

Hi,

you already asked on the Cython users list, but since this list is more appropriate (your installation issues have nothing to do with Cython), let's continue over here.

Pedro Pastor, 05.09.2013 23:54:

...

I'm quite new to Python ecosystem.

I'm working on a Windows 7 Professional (x64) platform. I'm trying to install "lxml" but I failed. I've tried 3 different ways:

1) Using the lxml-3.2.3.win-amd64-py2.7.exe file at https://pypi.python.org/pypi/lxml/3.2.3 :

At the very beginning of the installation process I get an error message:

"Python version 2.7 required, wich was not found in the registry."

and I cannot set the appropriate path.

Not path, registry. That's a Windows specific thing. How did you install Python?

There is also an alternative lxml installer at

http://www.lfd.uci.edu/~gohlke/pythonlibs/

which you can try.

...

It is weird. I got Python 2.7.3 installed and set in the System PATH. I can run it from the Windows console and run several Python environments.

The problem is not getting it into the system PATH. You need to properly install it the proper Windows way in order to allow other Windows installers (like that of lxml) to find it.

Note that your problem doesn't have much to do with Python specifically, it's a Windows installation problem.

...

2) Using "pip" tool. The process fails and issues an error:

"Unable to find vcvarsall.bat"

You need a C compiler to compile lxml from sources. There's MS Visual Studio Express (as Chris Barker pointed out), if you really want to go that route. I do not recommend it. Instead, fix up your Python installation and then use a binary installer for lxml. Everything else will just be too much hassle on a Windows system.

...

3) Using Cython, but I'm having troubles with Cython too ;-).

You do not need Cython, and I recommend not using it to install lxml. In fact, it won't be used by the installation anyway, even if it's installed.

Stefan

Theoretically the following should also work: c:\path_to_your_python\scripts\easy_install.exe lxml-3.2.3.win-amd64-py2.7.exe But otherwise a properly installed python is definitely the right way. Another question is whether the python you installed is 64 or 32 bit? Because that should *match* with the lxml package bits. To figure, start your python and watch for the first line: Python 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)] on win32 Python 2.7.2 (default, Jun 12 2011, 14:24:46) [MSC v.1500 64 bit (AMD64)] on win32 -- Best regards, Adam GROSZER -- Quote of the day: Actors will happen even in the best-regulated families.