Re: [gpsd-dev] [PATCH 3/4] Fixes gps.gps.gps iterator for Python 3.

[Eric S. Raymond]

Fred Wright <address@hidden>:
> 
> On Sat, 16 Apr 2016, Eric S. Raymond wrote:
> 
> > Fred Wright <address@hidden>:
> > > Python 3 renames the iterator next() method to __next__().  Without
> > > the new name, attempting to use the object as an iterator doesn't
> > > work.  This didn't surface until trying webgps.py.
> >
> > Sounds like this should be acced to Practical Python Porting.  Does
> > 2to3 do the method renaming?
> 
> Yes, it looks like it does.  I never bothered running 2to3 on gps/*.py
> since I assumed you'd already done that in your initial pass, and just
> fixed things that actually failed.

Confirmed. I checked with a sample program.  I've added this as a
HOWTO checklist item.

> Of course running 2to3 *now*, it wants to rename the wrapper, which would
> make it completely broken.  It should really be called 2to3only, since it
> complains about anything you try to do for Python 2 compatibility. :-)

Yeah.  If I get enough round tuits I'm going to write a patch for 2to3
that allows you to specify either 2.7-compatibility changes or 2.7-to-3
changes only.
-- 
                <a href="http://www.catb.org/~esr/";>Eric S. Raymond</a>