Nick Coghlan wrote:
Martin v. Löwis wrote:
Please don't - not before % is actually deprecated (which I hope won't
happen until Python 4, with removal of % in Python 5, in the year
when I retire, i.e. 2037).
Now this is news to me -- was there a discussion that changed the
lifetime expectancy of str.__mod__? I'd always supposed it being
deprecated at some point in 3.x.
The PEP doesn't specify anything, and I don't recall any discussion,
either - the specific timing suggested above is merely my own hopes.
While str.format has an awful lot of points in its favour (no
tuple/dict special casing, much cleaner handling of named arguments,
access to format options for non-builtin types), there are some
debugging cases where I suspect the basic version of % formatting will
prove to be more convenient.
At this point in time, my personal preference would be that later in
the 3.x series certain aspects of % formatting will be deprecated
(acceptance of non-tuples in favour of the format() builtin,
acceptance of dicts in favour of str.format), but that simple %
formatting of a tuple of values will still be permitted.
+1
Simple string formatting with %s and a single object or a tuple meets
>90% of my string formatting needs.
Michael Foord
Cheers,
Nick.
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