Hi Thierry,
It seems that your environment is not completely set-up. Under `tvb_root` you have folder `tvb_contrib` were python module `tvb.contrib` is hosted.
cd tvb_contrib
python setup.py develop --no-deps
Anyway, after `import tvb.contrib` works, I am able to reproduce your error.
It seem to be a problem with the way these models (from under tvb_contrib) were translated (apparently incompletely) towards Python 3 and our neo-traits.
To make your example run, you should switch the two lines in morris_lecar.py, constructor MorrisLecar. __init__
super(MorrisLecar, self).__init__(**kwargs)
LOG.info('%s: initing...' % str(self))
We will add a task in the following development sprints to have these models fixed.
Let us know how these work for you.
Best,
Lia Domide
TVB technical team