[PyQt] sip module shared between multiple python installs

Hans Jørgen Kjærnet hansj at stormstudios.no
Wed Mar 31 10:47:13 BST 2010

Confirmed: I compiled python with --enable-unicode=ucs4 (ucs2 was
default) which fixed the problem.

Thank you,

Hans Jørgen Kjærnet | Senior TD
Storm Studios AS
w: +47 24 200 500
m: +47 93 027 843

2010/3/30 Phil Thompson <phil at riverbankcomputing.com>:
> On Tue, 30 Mar 2010 15:08:15 +0200, Hans Jørgen Kjærnet
> <hansj at stormstudios.no> wrote:
>> Hi,
>> As we are using different versions of python in our Studio, we would
>> like sip to be installed into ONE common location.
>> Here's a list of our pythons:
>> python2.5.1 - compiled from repository and installed into a shared
>> network location
>> maya2009-python2.5.1 - The program we use for 3D (Autodesk Maya
>> 2009)This is the python2.5.1 that comes with maya and resides under
>> the maya location. It's a built in interpreter.
>> nuke5.2-python2.5.1 - This is the python2.5.1 for nuke (The Foundry,
>> Nuke). Also a built in interpreter.
>> So, my initial thought was to compile and install sip (4.10.1) into
>> one common site wide location (so there will be less maintenance),
>> say: /net/share/python/site-packages, and have
>> PYTHONPATH=/net/share/python/site-packages.
>> However, sip will only work for the python interpreter that was used
>> to compile sip. In this case, let's assume I'm using the self compiled
>> python2.5.1 from the repository. When I try to import sip from inside
>> maya or nuke, I get a "Undefined symbol: PyUnicodeUCS2_DecodeLatin1. I
>> figure this is becasue it can't locate the libpython.so in the
>> self-compiled python2.5.1. Setting LD_LIBRARY_PATH doesn't do the
>> trick either - besides, I really don`t want to have LD_LIBRARY_PATH
>> configured.
>> I did install sip for each of the pythons, and it worked. This is what
>> I would like to avoid as it presents an extra step of maintenance when
>> dealing with upgrades.
>> So, question:
>> Is there a way to have the sip module shared between multiple
>> instances of python interpreters - and if so - what's the best way to
>> do this? FYI, PyQt works fine from a single site wide location.
> The likely problem is that your Python interpreters have been built
> differently relating to how Unicode characters are stored.
> Phil

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