I apologize... the bits I saw the "< 0" testing were in the following link. The examples in the repo don't have either try/catch or the int testing such as in the second link.

https://libvirt.org/docs/libvirt-appdev-guide-python/en-US/html/libvirt_application_development_guide_using_python-Guest_Domains-Lifecycle_Control.html#libvirt_application_development_guide_using_python-Guest_Domains-Lifecycle-Provisioning_and_Starting

https://gitlab.com/libvirt/libvirt-python/-/blob/d8d55b17e227f0ce829e709966f580861186f8ab/examples/domsave.py#L29


On Mon, Aug 24, 2020 at 6:09 AM Michal Privoznik <mprivozn@redhat.com> wrote:
On 8/24/20 11:38 AM, Jeremy Markle wrote:
> I was simply following the examples in the python-libvirt repo. If those
> methods raise exceptions I'll definitely change to try/catch. Thank you.
> The maintainer of the repo should update the examples and documentation
> if exceptions are raised by those.
>

Can you be more specific please? A quick git grep shows only a few cases
which don't compare APIs rather than some integer variables:

libvirt-python.git $ git grep -C 3 -e '< 0' --or -e '== 0' -- examples/

And those try/catch statements - in our basic examples we don't do any
rollback and simply just let python abort.

Michal