Re: python3 script header and rhel8

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 1/28/20 4:44 PM, Vladimir Sementsov-Ogievskiy wrote:
> Hi all!
> 
> Hmm Qemu dropped support for python2, and anyway python2 is not supported now at all.
> 
> Still, we have a lot of "#!/usr/bin/env python" headings in our scripts, which is
> unsupported by rhel8 by default. So, for example, because of such line in
> tests/qemu-iotests/nbd-fault-injector.py, iotest 277 fails.
> 
> Of course, it's simple to set python in rhel8 to be python3... But should we fix
> all the headings to be "#!/usr/bin/env python3"? Or what is the correct heading
> for scripts in a new python3 world?

I'd go for a codebase wide cleanup for once, and use python3. That way 
we are ready for when Python4 goes out, we won't suffer the same pain. 
That also mean we'll have to explicitly support Python4.

Eventually add modify scripts/checkpatch.pl to refuse commits 
introducing unversioned python back.