Issue #13597: Fix the documentation of the "-u" command-line option, and wording of "What's new in Python 3.0" about standard streams.

This commit is contained in:
Antoine Pitrou 2011-12-21 11:24:15 +01:00
parent 86a8a9ae98
commit 08c08eb93c
2 changed files with 9 additions and 4 deletions

View File

@ -247,7 +247,8 @@ Miscellaneous options
Force the binary layer of the stdin, stdout and stderr streams (which is
available as their ``buffer`` attribute) to be unbuffered. The text I/O
layer will still be line-buffered.
layer will still be line-buffered if writing to the console, or
block-buffered if redirected to a non-interactive file.
See also :envvar:`PYTHONUNBUFFERED`.

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@ -301,6 +301,12 @@ changed.
There is no longer any need for using the encoding-aware streams
in the :mod:`codecs` module.
* The initial values of :data:`sys.stdin`, :data:`sys.stdout` and
:data:`sys.stderr` are now unicode-only text files (i.e., they are
instances of :class:`io.TextIOBase`). To read and write bytes data
with these streams, you need to use their :data:`io.TextIOBase.buffer`
attribute.
* Filenames are passed to and returned from APIs as (Unicode) strings.
This can present platform-specific problems because on some
platforms filenames are arbitrary byte strings. (On the other hand,
@ -511,9 +517,7 @@ consulted for longer descriptions.
produces a literal of type :class:`bytes`.
* :ref:`pep-3116`. The :mod:`io` module is now the standard way of
doing file I/O, and the initial values of :data:`sys.stdin`,
:data:`sys.stdout` and :data:`sys.stderr` are now instances of
:class:`io.TextIOBase`. The built-in :func:`open` function is now an
doing file I/O. The built-in :func:`open` function is now an
alias for :func:`io.open` and has additional keyword arguments
*encoding*, *errors*, *newline* and *closefd*. Also note that an
invalid *mode* argument now raises :exc:`ValueError`, not