[openstack-dev] [Neutron] ImportError: No module named neutron_lib

Doug Hellmann doug at doughellmann.com
Thu Mar 9 12:12:53 UTC 2017


Excerpts from Sam's message of 2017-03-09 14:33:11 +0800:
> Sorry, it's oslo_db, I'm wrong

The "Drop our use of namespace packages" spec explains why.

http://specs.openstack.org/openstack/oslo-specs/specs/kilo/drop-namespace-packages.html

Doug

> 
> 2017-03-09 14:22 GMT+08:00 Sam <batmanustc at gmail.com>:
> 
> > I found this:
> >
> > from oslo_config import ...
> > from oslo_db import ...
> > from neutron_lib import ...
> >
> > actually these libraries is oslo.config, oslo.db, neutron.lib
> >
> > Why not write like this: from oslo.config import ... ?
> >
> > And for local package, its: from neutron.api import ...
> >
> > WHY ?
> >
> > 2017-03-08 5:28 GMT+08:00 Tony Breeds <tony at bakeyournoodle.com>:
> >
> >> On Tue, Mar 07, 2017 at 04:04:55PM +0800, Sam wrote:
> >> > Is this?
> >> >
> >> > https://pypi.python.org/pypi/neutron-lib
> >>
> >> Make sure you're installing with upper-constratints otehrwise you'll get
> >> components that rely on features for newer releases
> >>
> >> Assuming you're installing with pip something like[1]
> >>
> >> wget 'http://tarballs.openstack.org/neutron/neutron-8.4.0-py2.py3
> >> -none-any.whl'
> >> wget 'http://git.openstack.org/cgit/openstack/requirements/plain/
> >> upper-constraints.txt?h=stable/mitaka'
> >>
> >> pip install -c upper-constratints.txt ./neutron-8.4.0-py2.py3-none-a
> >> ny.whl
> >>
> >> Should get you a stable/mitaka neutron with appropriate versions of all
> >> libraries in use.
> >>
> >> Yours Tony.
> >>
> >> [1] You may be able to pass the URLs directly to pip but I haven't tested
> >> that for wheels
> >>
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> >>
> >



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