[tahoe-dev] No module named python....

[Zooko Wilcox-O'Hearn]

Samps:

Thank you for writing to tell us what you tried.  The error message  
saying "No module named python" is actually showing that a package  
named Twisted is incorrectly installed in your system.  The error  
message from your earlier post is:

     from twisted.python import usage
ImportError: No module named python

The Tahoe-LAFS install process does attempt to install Twisted if  
Twisted is not already installed, but I can't think of any way in  
which that install process would cause Twisted to be incorrectly  
installed.  I wonder if you already had a broken installation of  
Twisted before you started.  You can find out where Twisted lives on  
your system with this command-line:

python -c 'import twisted;print twisted;print twisted.__version__'

You can see whether it is in this half-installed, broken state with  
this command-line:

python -c 'import twisted.python;print twisted.python'

Perhaps you should uninstall and reinstall Twisted from the Ubuntu  
packages, with the following command-line:

sudo apt-get install --reinstall python-twisted python-twisted-core  
python-twisted-bin python-twisted-web

I'm sorry about this -- I don't think that the trouble could have  
been caused by our build process, but I'm not sure and I'm not sure  
how to figure out what has happened after the fact.

If you try this please report if it changes the behavior.  Thanks!

Regards,

Zooko