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Re: [Bkchem-user] Additional dependency in OASA 1.3.0

From: Beda Kosata
Subject: Re: [Bkchem-user] Additional dependency in OASA 1.3.0
Date: Wed, 04 Mar 2009 20:31:12 +0100
User-agent: Thunderbird (X11/20080914)

Hi Noel,

Thanks for reporting this issue.
The mhash library is only required to generate InChIKey from InChI.
Unfortunately it gets dragged in by another module (name_database) which
you probably do not need anyway :)
Please feel free to get rid of this problem by removing "name_database"
from the __init__ file. I will try to come up with a different scheme
for importing oasa which does not suffer from this problem of unrelated
dependencies breaking the installation.

        Best regards


p.s.- In Python 2.5 the SHA-256 hash is already included, so there it is
no problem. This error only appears for Python 2.4 for which the mhash
library is needed.

Noel O'Boyle wrote:
> I get the following error when importing OASA 1.3.0:
>>>> import oasa
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "C:\Python24\Lib\site-packages\oasa\__init__.py", line 41, in ?
>     import name_database
>   File "C:\Python24\Lib\site-packages\oasa\name_database.py", line 23, in ?
>     import inchi_key
>   File "C:\Python24\Lib\site-packages\oasa\inchi_key.py", line 28, in ?
>     raise Exception( "python-mhash library was not found, make sure it is 
> instal
> led")
> Exception: python-mhash library was not found, make sure it is installed
> Is this required?
> Regards,
>    Noel
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