Re: [Qemu-devel] [PATCH 1/4] configure: keep track of Python version

[Eduardo Habkost]

On Fri, Nov 09, 2018 at 02:51:11PM -0500, Cleber Rosa wrote:
> 
> 
> On 11/9/18 1:25 PM, Eduardo Habkost wrote:
> >>
> >> "Python -V" is quite different from "sys.version".  Indeed it includes
> >> the "Python " prefix, but that's all, everything else is the version 
> >> number.
> > 
> > Is this a guarantee documented somewhere?
> > 
> 
> Oops, looks like I missed that comment, and failed to address it.  Now,
> I must say I don't expect a documented guarantee about this will exist,
> but it looks like this is an acknowledged use case:
> 
> https://bugs.python.org/issue18338

Well, considering that it even has a unit test checking for a
specific format[1], I think the usage in this patch can be
considered acceptable.

[1] https://hg.python.org/cpython/rev/e6384b8b2325

-- 
Eduardo