I'm not sure how format_map helps in porting from 2 to 3, since it doesn't exist in any version of 2.
Although that said, it's no doubt a useful feature, just not useful in code that supports both 2 and 3 with a single code base or when porting to 3. Eric. On 1/9/2014 4:02 PM, antoine.pitrou wrote: > http://hg.python.org/peps/rev/8947cdc6b22e > changeset: 5341:8947cdc6b22e > user: Antoine Pitrou <[email protected]> > date: Thu Jan 09 22:02:01 2014 +0100 > summary: > PEP 460: add .format_map() > > files: > pep-0460.txt | 6 +++++- > 1 files changed, 5 insertions(+), 1 deletions(-) > > > diff --git a/pep-0460.txt b/pep-0460.txt > --- a/pep-0460.txt > +++ b/pep-0460.txt > @@ -24,12 +24,16 @@ > similar in syntax to ``str.format()`` (accepting positional as well as > keyword arguments). > > +* ``bytes.format_map(...)`` and ``bytearray.format_map(...)`` for an > + API similar to ``str.format_map(...)``, with the same formatting > + syntax and semantics as ``bytes.format()`` and ``bytearray.format()``. > + > > Rationale > ========= > > In Python 2, ``str % args`` and ``str.format(args)`` allow the formatting > -and interpolation of bytes strings. This feature has commonly been used > +and interpolation of bytestrings. This feature has commonly been used > for the assembling of protocol messages when protocols are known to use > a fixed encoding. > > > > > _______________________________________________ > Python-checkins mailing list > [email protected] > https://mail.python.org/mailman/listinfo/python-checkins > _______________________________________________ Python-Dev mailing list [email protected] https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com