sys.path issue in cygwin

Wang Shuhao wangshuhao at
Thu Jan 25 07:48:44 CET 2007

This is not a problem of Cygwin itself. The root cause of the problem is that I installed  both in Win32 version and Cygwin version on my machine. The PYTHONHOME environment variable in Windows point to c:\python24. After remove this environment variable, the Cygwin version python's sys.path become correct. Override the environment variable in Cygwing is also Ok.

----- Original Message ----- 
From: "Jason Tishler" <jason at>
To: "Wang Shuhao" <wangshuhao at>
Cc: "Python-List" <python-list at>
Sent: Wednesday, January 24, 2007 11:23 PM
Subject: Re: sys.path issue in cygwin

> Wang,
> Please keep your replies on-list.
> On Wed, Jan 24, 2007 at 10:28:51PM +0800, Wang Shuhao wrote:
>> > Why not use the Python that is part of the standard Cygwin
>> > distribution?
>> > 
>> Cause the Cygwin version python has the same problem, that why I try
>> to build python from source.
> The above implies that you may have a Cygwin installation problem that
> may impact other Cygwin applications too.  I recommend taking this
> problem to the Cygwin list:
> FWIW, I get the following with the official Cygwin Python version:
>    $ python -c 'import sys; print sys.path'
>    ['', '/usr/lib/', '/usr/lib/python2.4', '/usr/lib/python2.4/plat-cygwin', '/usr/lib/python2.4/lib-tk', '/usr/lib/python2.4/lib-dynload', '/usr/lib/python2.4/site-packages']
>> But finally I found the solution, the PYTHONHOME environment variable
>> controls the content of initial sys.path. Thanks anyway.
>> export PYTHONHOME=/usr/localWang Shuhao
> IMO, the above is just a workaround, not a solution.
> Jason
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