this looks like an install problem.   that .pyc files are being referenced in a 
stack trace seems fishy already.  I'd ensure that all prior versions of SQLA 
are completely blown away before installing the new version.


On Jun 1, 2010, at 5:46 PM, Emanuele Gesuato wrote:

> Hi there,
> 
> I'm trying to port an application from sqlalchemy 0.5 to 0.6 but i got
> a strange error when i try to run the program in windows xp. The log
> is the following:
> 
> Traceback (most recent call last):
>  File "database.pyc", line 20, in <module>
>  File "sqlalchemy\engine\__init__.pyc", line 237, in create_engine
>  File "sqlalchemy\engine\strategies.pyc", line 46, in create
>  File "sqlalchemy\engine\url.pyc", line 99, in get_dialect
> ImportError: No module named postgresql
> 
> The row is the following:
> pg_db = create_engine('postgresql://user:p...@localhost:5432/db',
> convert_unicode=True)
> 
> I'm using python 2.5 with psycopg 2.2.1 and postgresql 8.3.
> 
> But i tried python 2.6 and the program starts fine. I read in your
> site that python 2.4+ is supported: am i missing something important ?
> 
> Thanks
> Emanuele
> 
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