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whatsnew: frame.clear, expanded entry for -I/isolated mode.

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R David Murray 2014-02-24 10:38:13 -05:00
parent dda926e657
commit 26818f64f0
1 changed files with 20 additions and 2 deletions
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Doc/whatsnew/3.4.rst
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@ -95,7 +95,7 @@ New expected features for Python implementations:
* :ref:`pip should always be "available" <whatsnew-pep-453>` (:pep:`453`). * :ref:`pip should always be "available" <whatsnew-pep-453>` (:pep:`453`).
* :ref:`Make newly created file descriptors non-inheritable <whatsnew-pep-446>` * :ref:`Make newly created file descriptors non-inheritable <whatsnew-pep-446>`
(:pep:`446`). (:pep:`446`).
* command line option for :ref:`isolated mode <using-on-misc-options>`, * command line option for :ref:`isolated mode <whatsnew-isolated-mode>`,
(:issue:`16499`). (:issue:`16499`).
* :ref:`improvements in the handling of codecs <codec-handling-improvements>` * :ref:`improvements in the handling of codecs <codec-handling-improvements>`
that are not text encodings (multiple issues). that are not text encodings (multiple issues).
@ -373,6 +373,10 @@ Some smaller changes made to the core Python language are:
method for its *base* argument. (Contributed by Mark Dickinson in method for its *base* argument. (Contributed by Mark Dickinson in
:issue:`16772`.) :issue:`16772`.)
* Frame objects now have a :func:`~frame.clear` method that clears all
references to local variables from the frame. (Contributed by Antoine Pitrou
in :issue:`17934`.)
New Modules New Modules
=========== ===========
@ -1253,7 +1257,8 @@ traceback
A new :func:`traceback.clear_frames` function takes a traceback object A new :func:`traceback.clear_frames` function takes a traceback object
and clears the local variables in all of the frames it references, and clears the local variables in all of the frames it references,
reducing the amount of memory consumed (:issue:`1565525`). reducing the amount of memory consumed. (Contributed by Andrew Kuchling in
:issue:`1565525`).
urllib urllib
@ -1485,6 +1490,19 @@ Other Build and C API Changes
Other Improvements Other Improvements
------------------ ------------------
.. _whatsnew-isolated-mode:
* The :ref:`python <using-on-cmdline>` command has a new :ref:`option
<using-on-misc-options>`, ``-I``, which causes it to run in "isolated mode",
which means that :data:`sys.path` contains neither the script's directory nor
the user's ``site-packages`` directory, and all :envvar:`PYTHON*` environment
variables are ignored (it implies both ``-s`` and ``-E``). Other
restrictions may also be applied in the future, with the goal being to
isolate the execution of a script from the user's environment. This is
appropriate, for example, when Python is used to run a system script. On
most POSIX systems it can and should be used in the ``#!`` line of system
scripts. (Contributed by Christian Heims in :issue:`16499`.)
* Tab-completion is now enabled by default in the interactive interpreter. * Tab-completion is now enabled by default in the interactive interpreter.
(Contributed by Antoine Pitrou and Éric Araujo in :issue:`5845`.) (Contributed by Antoine Pitrou and Éric Araujo in :issue:`5845`.)