Grok python 2.6 HMAC

[yvan]

try to run grok with python2.6, I have edited the buildout.cfg like that:
[versions]
mechanize = 0.1.9
zope.app.appsetup = 3.8.0
zope.app.component = 3.5.0
zope.app.container = 3.6.1
zope.app.form = 3.6.3
zope.app.publisher = 3.5.1
zope.app.testing = 3.5.6
zope.testbrowser = 3.5.1

According to the mailing list email from <email address hidden> subject [Grok-dev] Grok runs on Python 2.6 published the 15th Oct. 2008. But I am unable to get to to this URL http://localhost:8080/applications. But if i try to go directly to
http://localhost:8080/application_name/ it is ok.
This could be related to this mail
http://www.nabble.com/TypeError-when-adding-an-app-from-the-tutorial-td21707217.html
but I don't know if a bug report was already filled ( at least I was not able to find it)

Is it the best place to report this problem?
Cheers,
yvan

[Kevin Teague (kevin-bud)]

I believe this is because the translate() string method changed in Python 2.6 (http://bugs.python.org/issue1071) so that it now throws an error when trying to translate a unicode string with a str translation table.

On Python 2.4 and 2.5 you can do:

>>> import hmac
>>> import sha
>>> hmac.new(u'nmeVoOHGCGpx4XMhmTbl3jGG4vg','0.93817239745203817591',sha)
<hmac.HMAC instance at 0x6bf08>

But on Python 2.6 this throws a "TypeError: character mapping must return integer, None or unicode".

A possible fix is to str() the session key before calling hmac.new() in zope.session. This works, but I'm not sure if this solution introduces any other bugs or if there is a better place to workaround this bug.

[Kevin Teague (kevin-bud)]

Ignore my previous comment about the translate() method, the problem is that there was an optimization made to the hmac module in Python 2.6 that had the seemlingly unintended effect that unicode strings are no longer accepted as input. I've filled a bug in the Python issue tracker (http://bugs.python.org/issue5285) but this "str() as input only" bug will still need handling in zope.session to work with Python 2.6.

[Kevin Teague (kevin-bud)]

zope.session 3.8.1 has been released, so adding it in the versions should fix this issue.

[versions]
zope.session = 3.8.1

[yvan (yvan-strahm)]

Thank you very much, it works nicely
cheers,