On 10 Mar 2014 11:36, "r.david.murray" <python-check...@python.org> wrote: > > http://hg.python.org/cpython/rev/2d5544afb510 > changeset: 89547:2d5544afb510 > user: R David Murray <rdmur...@bitdance.com> > date: Sun Mar 09 20:33:35 2014 -0400 > summary: > whatsnew: 'U' mode deprecation (#15204). > > files: > Doc/whatsnew/3.4.rst | 14 +++++++++++++- > 1 files changed, 13 insertions(+), 1 deletions(-) > > > diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst > --- a/Doc/whatsnew/3.4.rst > +++ b/Doc/whatsnew/3.4.rst > @@ -1948,6 +1948,11 @@ > * The :mod:`sysconfig` key ``SO`` is deprecated, it has been replaced by > ``EXT_SUFFIX``. > > +* The ``U`` mode accepted by various ``open`` functions is deprecated. > + In Python3 it does not do anything useful, and should be replaced by > + appropriate uses of :class:`io.TextIOWrapper` (if needed) and its *newline* > + argument. > +
Huh, I missed that change. Don't we still need U when writing 2/3 compatible code at this point? If so, perhaps we may want to reconsider this particular deprecation in 3.4.1. Cheers, Nick. > > Deprecations in the C API > ------------------------- > @@ -2242,7 +2247,14 @@ > > * Since the *digestmod* argument to the :func:`hmac.new` function will in the > future have no default, all calls to :func:`hmac.new` should be changed to > - explicitly specify a *digestmod*. (:issue:`17276`). > + explicitly specify a *digestmod* (:issue:`17276`). > + > +* Any calls to ``open`` functions that specify ``U`` should be modified. > + ``U`` is ineffective in Python3 and will eventually raise an error if used. > + Depending on the function, the equivalent of its old Python2 behavior can be > + achieved using either a *newline* argument, or if necessary by wrapping the > + stream in :mod:`~io.TextIOWrapper` to use its *newline* argument > + (:issue:`15204`). > > > Changes in the C API > > -- > Repository URL: http://hg.python.org/cpython > > _______________________________________________ > Python-checkins mailing list > python-check...@python.org > https://mail.python.org/mailman/listinfo/python-checkins >
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