On Fri, Nov 10, 2017 at 05:42:01PM -0800, Gregory Szorc wrote:
> On Fri, Nov 10, 2017 at 4:22 PM, Xidorn Quan <m...@upsuper.org> wrote:
> 
> > I'm happy hearing this. I would be interested on whether we are going to
> > drop Python 2 at some point, or are we stuck with that forever?
> >
> 
> Let's put it this way: we still have a few uses of Perl in the build
> system. There have been no meaningful changes to that Perl code in years.
> 
> We'll likely be using Python 2 for years ahead because there isn't a
> compelling reason to port code that isn't being actively updated.
> 
> 
> >
> > Also I'm curious what modern features are the team looking forward to?
> >
> 
> asyncio is huge for performance, especially for I/O bound workloads (both
> local and network). We have a few of these in critical paths in the build
> system.
> 
> Python 3.6 is faster than 2.7 pretty much across the board in everything
> except for process startup overhead.
> 
> Python 3 has sensible behavior with regards to not coercing Unicode and
> bytes types, which means people not using English in their operation system
> won't experience as many build failures due to us failing to handle Unicode
> in the build system.

In fairness, those problems wouldn't be magically be fixed by using
python 3. We'd still have to handle the difference between bytes and
unicode somehow, and the reason there have been these problems is that
we're failing to do that, and python 3 alone wouldn't solve that.

Mike
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