[Python-Dev] difference between diff string implementations
Guido van Rossum
guido at python.org
Sun Mar 16 05:29:10 CET 2008
On Sat, Mar 15, 2008 at 5:54 PM, Neal Norwitz <nnorwitz at gmail.com> wrote:
> This inconsistency goes back to 2.3 at least and probably to the
> initial unicode implementation.
> >>> set(dir(u'')) - set(dir(''))
> ['isnumeric', 'isdecimal']
> UserString contains these two methods even though 8-bit strings do
> not. I'm not sure what we should do for 2.6 or 3.0. My preference
> would be to remove these methods on unicode/UserString if they aren't
> useful to a large audience. However, removing for 2.6 without a
> deprecation seems bad.
It looks like they all denote different character classes though. I'd
be inclined to keep the status quo in 2.6; the inconsistency will
disappear in 3.0 (I don't think we need to add them to bytes).
They should be documented though.
--Guido van Rossum (home page: http://www.python.org/~guido/)
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