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Merge from 3.6

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Berker Peksag 2016-09-13 05:53:01 +03:00
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@ -158,14 +158,14 @@ trailing underscores are not allowed.
.. seealso:: .. seealso::
:pep:`523` - Underscores in Numeric Literals :pep:`523` -- Underscores in Numeric Literals
PEP written by Georg Brandl & Serhiy Storchaka. PEP written by Georg Brandl and Serhiy Storchaka.
.. _pep-523: .. _pep-523:
PEP 523: Adding a frame evaluation API to CPython PEP 523: Adding a frame evaluation API to CPython
================================================= -------------------------------------------------
While Python provides extensive support to customize how code While Python provides extensive support to customize how code
executes, one place it has not done so is in the evaluation of frame executes, one place it has not done so is in the evaluation of frame
@ -187,14 +187,14 @@ API will change with Python as necessary.
.. seealso:: .. seealso::
:pep:`523` - Adding a frame evaluation API to CPython :pep:`523` -- Adding a frame evaluation API to CPython
PEP written by Brett Cannon and Dino Viehland. PEP written by Brett Cannon and Dino Viehland.
.. _pep-519: .. _pep-519:
PEP 519: Adding a file system path protocol PEP 519: Adding a file system path protocol
=========================================== -------------------------------------------
File system paths have historically been represented as :class:`str` File system paths have historically been represented as :class:`str`
or :class:`bytes` objects. This has led to people who write code which or :class:`bytes` objects. This has led to people who write code which
@ -254,7 +254,7 @@ pre-existing code::
.. seealso:: .. seealso::
:pep:`519` - Adding a file system path protocol :pep:`519` -- Adding a file system path protocol
PEP written by Brett Cannon and Koos Zevenhoven. PEP written by Brett Cannon and Koos Zevenhoven.
@ -267,7 +267,7 @@ Formatted string literals are a new kind of string literal, prefixed
with ``'f'``. They are similar to the format strings accepted by with ``'f'``. They are similar to the format strings accepted by
:meth:`str.format`. They contain replacement fields surrounded by :meth:`str.format`. They contain replacement fields surrounded by
curly braces. The replacement fields are expressions, which are curly braces. The replacement fields are expressions, which are
evaluated at run time, and then formatted using the :func:`format` protocol. evaluated at run time, and then formatted using the :func:`format` protocol::
>>> name = "Fred" >>> name = "Fred"
>>> f"He said his name is {name}." >>> f"He said his name is {name}."
@ -278,7 +278,7 @@ See :pep:`498` and the main documentation at :ref:`f-strings`.
.. _pep-529: .. _pep-529:
PEP 529: Change Windows filesystem encoding to UTF-8 PEP 529: Change Windows filesystem encoding to UTF-8
==================================================== ----------------------------------------------------
Representing filesystem paths is best performed with str (Unicode) rather than Representing filesystem paths is best performed with str (Unicode) rather than
bytes. However, there are some situations where using bytes is sufficient and bytes. However, there are some situations where using bytes is sufficient and
@ -304,7 +304,7 @@ may be required.
encoding may change before the final release. encoding may change before the final release.
PEP 487: Simpler customization of class creation PEP 487: Simpler customization of class creation
================================================ ------------------------------------------------
Upon subclassing a class, the ``__init_subclass__`` classmethod (if defined) is Upon subclassing a class, the ``__init_subclass__`` classmethod (if defined) is
called on the base class. This makes it straightforward to write classes that called on the base class. This makes it straightforward to write classes that
@ -341,7 +341,7 @@ console use, set :envvar:`PYTHONLEGACYWINDOWSIOENCODING`.
PEP written and implemented by Steve Dower. PEP written and implemented by Steve Dower.
PYTHONMALLOC environment variable PYTHONMALLOC environment variable
================================= ---------------------------------
The new :envvar:`PYTHONMALLOC` environment variable allows setting the Python The new :envvar:`PYTHONMALLOC` environment variable allows setting the Python
memory allocators and/or install debug hooks. memory allocators and/or install debug hooks.
@ -442,7 +442,7 @@ Jesús Cea Avión, David Malcolm, and Nikhil Benesch.)
.. _whatsnew-deforder: .. _whatsnew-deforder:
PEP 520: Preserving Class Attribute Definition Order PEP 520: Preserving Class Attribute Definition Order
==================================================== ----------------------------------------------------
Attributes in a class definition body have a natural ordering: the same Attributes in a class definition body have a natural ordering: the same
order in which the names appear in the source. This order is now order in which the names appear in the source. This order is now
@ -453,21 +453,21 @@ Also, the effective default class *execution* namespace (returned from
.. seealso:: .. seealso::
:pep:`520` - Preserving Class Attribute Definition Order :pep:`520` -- Preserving Class Attribute Definition Order
PEP written and implemented by Eric Snow. PEP written and implemented by Eric Snow.
.. _whatsnew-kwargs: .. _whatsnew-kwargs:
PEP 468: Preserving Keyword Argument Order PEP 468: Preserving Keyword Argument Order
========================================== ------------------------------------------
``**kwargs`` in a function signature is now guaranteed to be an ``**kwargs`` in a function signature is now guaranteed to be an
insertion-order-preserving mapping. insertion-order-preserving mapping.
.. seealso:: .. seealso::
:pep:`468` - Preserving Keyword Argument Order :pep:`468` -- Preserving Keyword Argument Order
PEP written and implemented by Eric Snow. PEP written and implemented by Eric Snow.