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"Project-Id-Version: Python en Español 3.7\n"

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"POT-Creation-Date: 2020-05-05 12:54+0200\n"

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#: ../Doc/whatsnew/3.8.rst:3

msgid "What's New In Python 3.8"

msgstr ""

#: ../Doc/whatsnew/3.8.rst

msgid "Editor"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:45

msgid "Raymond Hettinger"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:47

msgid ""

"This article explains the new features in Python 3.8, compared to 3.7. For "

"full details, see the :ref:`changelog <changelog>`."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:50

msgid "Python 3.8 was released on October 14th, 2019."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:62

msgid "Summary -- Release highlights"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:73

msgid "New Features"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:76

msgid "Assignment expressions"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:78

msgid ""

"There is new syntax ``:=`` that assigns values to variables as part of a "

"larger expression. It is affectionately known as \"the walrus operator\" due "

"to its resemblance to `the eyes and tusks of a walrus <https://en.wikipedia."

"org/wiki/Walrus#/media/File:Pacific_Walrus_-_Bull_(8247646168).jpg>`_."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:83

msgid ""

"In this example, the assignment expression helps avoid calling :func:`len` "

"twice::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:89

msgid ""

"A similar benefit arises during regular expression matching where match "

"objects are needed twice, once to test whether a match occurred and another "

"to extract a subgroup::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:97

msgid ""

"The operator is also useful with while-loops that compute a value to test "

"loop termination and then need that same value again in the body of the "

"loop::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:105

msgid ""

"Another motivating use case arises in list comprehensions where a value "

"computed in a filtering condition is also needed in the expression body::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:112

msgid ""

"Try to limit use of the walrus operator to clean cases that reduce "

"complexity and improve readability."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:115

msgid "See :pep:`572` for a full description."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:117

msgid "(Contributed by Emily Morehouse in :issue:`35224`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:121

msgid "Positional-only parameters"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:123

msgid ""

"There is a new function parameter syntax ``/`` to indicate that some "

"function parameters must be specified positionally and cannot be used as "

"keyword arguments. This is the same notation shown by ``help()`` for C "

"functions annotated with Larry Hastings' `Argument Clinic <https://docs."

"python.org/3/howto/clinic.html>`_ tool."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:129

msgid ""

"In the following example, parameters *a* and *b* are positional-only, while "

"*c* or *d* can be positional or keyword, and *e* or *f* are required to be "

"keywords::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:136

msgid "The following is a valid call::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:140

msgid "However, these are invalid calls::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:145

msgid ""

"One use case for this notation is that it allows pure Python functions to "

"fully emulate behaviors of existing C coded functions. For example, the "

"built-in :func:`divmod` function does not accept keyword arguments::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:153

msgid ""

"Another use case is to preclude keyword arguments when the parameter name is "

"not helpful. For example, the builtin :func:`len` function has the "

"signature ``len(obj, /)``. This precludes awkward calls such as::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:159

msgid ""

"A further benefit of marking a parameter as positional-only is that it "

"allows the parameter name to be changed in the future without risk of "

"breaking client code. For example, in the :mod:`statistics` module, the "

"parameter name *dist* may be changed in the future. This was made possible "

"with the following function specification::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:168

msgid ""

"Since the parameters to the left of ``/`` are not exposed as possible "

"keywords, the parameters names remain available for use in ``**kwargs``::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:177

msgid ""

"This greatly simplifies the implementation of functions and methods that "

"need to accept arbitrary keyword arguments. For example, here is an excerpt "

"from code in the :mod:`collections` module::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:186

msgid "See :pep:`570` for a full description."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:188

msgid "(Contributed by Pablo Galindo in :issue:`36540`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:194

msgid "Parallel filesystem cache for compiled bytecode files"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:196

msgid ""

"The new :envvar:`PYTHONPYCACHEPREFIX` setting (also available as :option:`-"

"X` ``pycache_prefix``) configures the implicit bytecode cache to use a "

"separate parallel filesystem tree, rather than the default ``__pycache__`` "

"subdirectories within each source directory."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:202

msgid ""

"The location of the cache is reported in :data:`sys.pycache_prefix` (:const:"

"`None` indicates the default location in ``__pycache__`` subdirectories)."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:206

msgid "(Contributed by Carl Meyer in :issue:`33499`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:210

msgid "Debug build uses the same ABI as release build"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:212

msgid ""

"Python now uses the same ABI whether it's built in release or debug mode. On "

"Unix, when Python is built in debug mode, it is now possible to load C "

"extensions built in release mode and C extensions built using the stable ABI."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:216

msgid ""

"Release builds and debug builds are now ABI compatible: defining the "

"``Py_DEBUG`` macro no longer implies the ``Py_TRACE_REFS`` macro, which "

"introduces the only ABI incompatibility. The ``Py_TRACE_REFS`` macro, which "

"adds the :func:`sys.getobjects` function and the :envvar:`PYTHONDUMPREFS` "

"environment variable, can be set using the new ``./configure --with-trace-"

"refs`` build option. (Contributed by Victor Stinner in :issue:`36465`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:224

msgid ""

"On Unix, C extensions are no longer linked to libpython except on Android "

"and Cygwin. It is now possible for a statically linked Python to load a C "

"extension built using a shared library Python. (Contributed by Victor "

"Stinner in :issue:`21536`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:231

msgid ""

"On Unix, when Python is built in debug mode, import now also looks for C "

"extensions compiled in release mode and for C extensions compiled with the "

"stable ABI. (Contributed by Victor Stinner in :issue:`36722`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:236

msgid ""

"To embed Python into an application, a new ``--embed`` option must be passed "

"to ``python3-config --libs --embed`` to get ``-lpython3.8`` (link the "

"application to libpython). To support both 3.8 and older, try ``python3-"

"config --libs --embed`` first and fallback to ``python3-config --libs`` "

"(without ``--embed``) if the previous command fails."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:242

msgid ""

"Add a pkg-config ``python-3.8-embed`` module to embed Python into an "

"application: ``pkg-config python-3.8-embed --libs`` includes ``-"

"lpython3.8``. To support both 3.8 and older, try ``pkg-config python-X.Y-"

"embed --libs`` first and fallback to ``pkg-config python-X.Y --libs`` "

"(without ``--embed``) if the previous command fails (replace ``X.Y`` with "

"the Python version)."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:248

msgid ""

"On the other hand, ``pkg-config python3.8 --libs`` no longer contains ``-"

"lpython3.8``. C extensions must not be linked to libpython (except on "

"Android and Cygwin, whose cases are handled by the script); this change is "

"backward incompatible on purpose. (Contributed by Victor Stinner in :issue:"

"`36721`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:256

msgid "f-strings support ``=`` for self-documenting expressions and debugging"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:258

msgid ""

"Added an ``=`` specifier to :term:`f-string`\\s. An f-string such as "

"``f'{expr=}'`` will expand to the text of the expression, an equal sign, "

"then the representation of the evaluated expression. For example:"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:267

msgid ""

"The usual :ref:`f-string format specifiers <f-strings>` allow more control "

"over how the result of the expression is displayed::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:274

msgid ""

"The ``=`` specifier will display the whole expression so that calculations "

"can be shown::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:280

msgid "(Contributed by Eric V. Smith and Larry Hastings in :issue:`36817`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:284

msgid "PEP 578: Python Runtime Audit Hooks"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:286

msgid ""

"The PEP adds an Audit Hook and Verified Open Hook. Both are available from "

"Python and native code, allowing applications and frameworks written in pure "

"Python code to take advantage of extra notifications, while also allowing "

"embedders or system administrators to deploy builds of Python where auditing "

"is always enabled."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:292

msgid "See :pep:`578` for full details."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:296

msgid "PEP 587: Python Initialization Configuration"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:298

msgid ""

"The :pep:`587` adds a new C API to configure the Python Initialization "

"providing finer control on the whole configuration and better error "

"reporting."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:301

msgid "New structures:"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:303

msgid ":c:type:`PyConfig`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:304

msgid ":c:type:`PyPreConfig`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:305

msgid ":c:type:`PyStatus`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:306

msgid ":c:type:`PyWideStringList`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:308

msgid "New functions:"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:310

msgid ":c:func:`PyConfig_Clear`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:311

msgid ":c:func:`PyConfig_InitIsolatedConfig`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:312

msgid ":c:func:`PyConfig_InitPythonConfig`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:313

msgid ":c:func:`PyConfig_Read`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:314

msgid ":c:func:`PyConfig_SetArgv`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:315

msgid ":c:func:`PyConfig_SetBytesArgv`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:316

msgid ":c:func:`PyConfig_SetBytesString`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:317

msgid ":c:func:`PyConfig_SetString`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:318

msgid ":c:func:`PyPreConfig_InitIsolatedConfig`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:319

msgid ":c:func:`PyPreConfig_InitPythonConfig`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:320

msgid ":c:func:`PyStatus_Error`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:321

msgid ":c:func:`PyStatus_Exception`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:322

msgid ":c:func:`PyStatus_Exit`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:323

msgid ":c:func:`PyStatus_IsError`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:324

msgid ":c:func:`PyStatus_IsExit`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:325

msgid ":c:func:`PyStatus_NoMemory`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:326

msgid ":c:func:`PyStatus_Ok`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:327

msgid ":c:func:`PyWideStringList_Append`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:328

msgid ":c:func:`PyWideStringList_Insert`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:329

msgid ":c:func:`Py_BytesMain`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:330

msgid ":c:func:`Py_ExitStatusException`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:331

msgid ":c:func:`Py_InitializeFromConfig`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:332

msgid ":c:func:`Py_PreInitialize`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:333

msgid ":c:func:`Py_PreInitializeFromArgs`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:334

msgid ":c:func:`Py_PreInitializeFromBytesArgs`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:335

msgid ":c:func:`Py_RunMain`"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:337

msgid ""

"This PEP also adds ``_PyRuntimeState.preconfig`` (:c:type:`PyPreConfig` "

"type) and ``PyInterpreterState.config`` (:c:type:`PyConfig` type) fields to "

"these internal structures. ``PyInterpreterState.config`` becomes the new "

"reference configuration, replacing global configuration variables and other "

"private variables."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:343

msgid ""

"See :ref:`Python Initialization Configuration <init-config>` for the "

"documentation."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:346

msgid "See :pep:`587` for a full description."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:348

msgid "(Contributed by Victor Stinner in :issue:`36763`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:352

msgid "Vectorcall: a fast calling protocol for CPython"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:354

msgid ""

"The \"vectorcall\" protocol is added to the Python/C API. It is meant to "

"formalize existing optimizations which were already done for various "

"classes. Any extension type implementing a callable can use this protocol."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:359

msgid ""

"This is currently provisional. The aim is to make it fully public in Python "

"3.9."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:362

msgid "See :pep:`590` for a full description."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:364

msgid "(Contributed by Jeroen Demeyer and Mark Shannon in :issue:`36974`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:368

msgid "Pickle protocol 5 with out-of-band data buffers"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:370

msgid ""

"When :mod:`pickle` is used to transfer large data between Python processes "

"in order to take advantage of multi-core or multi-machine processing, it is "

"important to optimize the transfer by reducing memory copies, and possibly "

"by applying custom techniques such as data-dependent compression."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:375

msgid ""

"The :mod:`pickle` protocol 5 introduces support for out-of-band buffers "

"where :pep:`3118`-compatible data can be transmitted separately from the "

"main pickle stream, at the discretion of the communication layer."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:379

msgid "See :pep:`574` for a full description."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:381

msgid "(Contributed by Antoine Pitrou in :issue:`36785`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:385

msgid "Other Language Changes"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:387

msgid ""

"A :keyword:`continue` statement was illegal in the :keyword:`finally` clause "

"due to a problem with the implementation. In Python 3.8 this restriction "

"was lifted. (Contributed by Serhiy Storchaka in :issue:`32489`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:392

msgid ""

"The :class:`bool`, :class:`int`, and :class:`fractions.Fraction` types now "

"have an :meth:`~int.as_integer_ratio` method like that found in :class:"

"`float` and :class:`decimal.Decimal`. This minor API extension makes it "

"possible to write ``numerator, denominator = x.as_integer_ratio()`` and have "

"it work across multiple numeric types. (Contributed by Lisa Roach in :issue:"

"`33073` and Raymond Hettinger in :issue:`37819`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:400

msgid ""

"Constructors of :class:`int`, :class:`float` and :class:`complex` will now "

"use the :meth:`~object.__index__` special method, if available and the "

"corresponding method :meth:`~object.__int__`, :meth:`~object.__float__` or :"

"meth:`~object.__complex__` is not available. (Contributed by Serhiy "

"Storchaka in :issue:`20092`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:406

msgid ""

"Added support of ``\\N{name}`` escapes in :mod:`regular expressions <re>`::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:413

msgid ""

"(Contributed by Jonathan Eunice and Serhiy Storchaka in :issue:`30688`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:415

msgid ""

"Dict and dictviews are now iterable in reversed insertion order using :func:"

"`reversed`. (Contributed by Rémi Lapeyre in :issue:`33462`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:418

msgid ""

"The syntax allowed for keyword names in function calls was further "

"restricted. In particular, ``f((keyword)=arg)`` is no longer allowed. It was "

"never intended to permit more than a bare name on the left-hand side of a "

"keyword argument assignment term. (Contributed by Benjamin Peterson in :"

"issue:`34641`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:424

msgid ""

"Generalized iterable unpacking in :keyword:`yield` and :keyword:`return` "

"statements no longer requires enclosing parentheses. This brings the *yield* "

"and *return* syntax into better agreement with normal assignment syntax::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:436

msgid "(Contributed by David Cuthbert and Jordan Chapman in :issue:`32117`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:438

msgid ""

"When a comma is missed in code such as ``[(10, 20) (30, 40)]``, the compiler "

"displays a :exc:`SyntaxWarning` with a helpful suggestion. This improves on "

"just having a :exc:`TypeError` indicating that the first tuple was not "

"callable. (Contributed by Serhiy Storchaka in :issue:`15248`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:444

msgid ""

"Arithmetic operations between subclasses of :class:`datetime.date` or :class:"

"`datetime.datetime` and :class:`datetime.timedelta` objects now return an "

"instance of the subclass, rather than the base class. This also affects the "

"return type of operations whose implementation (directly or indirectly) "

"uses :class:`datetime.timedelta` arithmetic, such as :meth:`~datetime."

"datetime.astimezone`. (Contributed by Paul Ganssle in :issue:`32417`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:452

msgid ""

"When the Python interpreter is interrupted by Ctrl-C (SIGINT) and the "

"resulting :exc:`KeyboardInterrupt` exception is not caught, the Python "

"process now exits via a SIGINT signal or with the correct exit code such "

"that the calling process can detect that it died due to a Ctrl-C. Shells on "

"POSIX and Windows use this to properly terminate scripts in interactive "

"sessions. (Contributed by Google via Gregory P. Smith in :issue:`1054041`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:459

msgid ""

"Some advanced styles of programming require updating the :class:`types."

"CodeType` object for an existing function. Since code objects are "

"immutable, a new code object needs to be created, one that is modeled on the "

"existing code object. With 19 parameters, this was somewhat tedious. Now, "

"the new ``replace()`` method makes it possible to create a clone with a few "

"altered parameters."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:466

msgid ""

"Here's an example that alters the :func:`statistics.mean` function to "

"prevent the *data* parameter from being used as a keyword argument::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:478

msgid "(Contributed by Victor Stinner in :issue:`37032`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:480

msgid ""

"For integers, the three-argument form of the :func:`pow` function now "

"permits the exponent to be negative in the case where the base is relatively "

"prime to the modulus. It then computes a modular inverse to the base when "

"the exponent is ``-1``, and a suitable power of that inverse for other "

"negative exponents. For example, to compute the `modular multiplicative "

"inverse <https://en.wikipedia.org/wiki/Modular_multiplicative_inverse>`_ of "

"38 modulo 137, write::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:494

msgid ""

"Modular inverses arise in the solution of `linear Diophantine equations "

"<https://en.wikipedia.org/wiki/Diophantine_equation>`_. For example, to find "

"integer solutions for ``4258𝑥 + 147𝑦 = 369``, first rewrite as ``4258𝑥 ≡ 369 "

"(mod 147)`` then solve:"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:504

msgid "(Contributed by Mark Dickinson in :issue:`36027`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:506

msgid ""

"Dict comprehensions have been synced-up with dict literals so that the key "

"is computed first and the value second::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:521

msgid ""

"The guaranteed execution order is helpful with assignment expressions "

"because variables assigned in the key expression will be available in the "

"value expression::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:531

msgid "(Contributed by Jörn Heissler in :issue:`35224`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:533

msgid ""

"The :meth:`object.__reduce__` method can now return a tuple from two to six "

"elements long. Formerly, five was the limit. The new, optional sixth "

"element is a callable with a ``(obj, state)`` signature. This allows the "

"direct control over the state-updating behavior of a specific object. If "

"not *None*, this callable will have priority over the object's :meth:"

"`~__setstate__` method. (Contributed by Pierre Glaser and Olivier Grisel in :"

"issue:`35900`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:542

msgid "New Modules"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:544

msgid ""

"The new :mod:`importlib.metadata` module provides (provisional) support for "

"reading metadata from third-party packages. For example, it can extract an "

"installed package's version number, list of entry points, and more::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:563

msgid "(Contributed by Barry Warsaw and Jason R. Coombs in :issue:`34632`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:567

msgid "Improved Modules"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:570

msgid "ast"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:572

msgid ""

"AST nodes now have ``end_lineno`` and ``end_col_offset`` attributes, which "

"give the precise location of the end of the node. (This only applies to "

"nodes that have ``lineno`` and ``col_offset`` attributes.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:576

msgid ""

"New function :func:`ast.get_source_segment` returns the source code for a "

"specific AST node."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:579

msgid "(Contributed by Ivan Levkivskyi in :issue:`33416`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:581

msgid "The :func:`ast.parse` function has some new flags:"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:583

msgid ""

"``type_comments=True`` causes it to return the text of :pep:`484` and :pep:"

"`526` type comments associated with certain AST nodes;"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:586

msgid ""

"``mode='func_type'`` can be used to parse :pep:`484` \"signature type "

"comments\" (returned for function definition AST nodes);"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:589

msgid ""

"``feature_version=(3, N)`` allows specifying an earlier Python 3 version. "

"For example, ``feature_version=(3, 4)`` will treat :keyword:`async` and :"

"keyword:`await` as non-reserved words."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:593

msgid "(Contributed by Guido van Rossum in :issue:`35766`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:597

msgid "asyncio"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:599

msgid ""

":func:`asyncio.run` has graduated from the provisional to stable API. This "

"function can be used to execute a :term:`coroutine` and return the result "

"while automatically managing the event loop. For example::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:611

msgid "This is *roughly* equivalent to::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:628

msgid ""

"The actual implementation is significantly more complex. Thus, :func:"

"`asyncio.run` should be the preferred way of running asyncio programs."

msgstr ""

#: ../Doc/whatsnew/3.8.rst:631

msgid "(Contributed by Yury Selivanov in :issue:`32314`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:633

msgid ""

"Running ``python -m asyncio`` launches a natively async REPL. This allows "

"rapid experimentation with code that has a top-level :keyword:`await`. "

"There is no longer a need to directly call ``asyncio.run()`` which would "

"spawn a new event loop on every invocation:"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:648

msgid "(Contributed by Yury Selivanov in :issue:`37028`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:650 ../Doc/whatsnew/3.8.rst:1955

msgid ""

"The exception :class:`asyncio.CancelledError` now inherits from :class:"

"`BaseException` rather than :class:`Exception`. (Contributed by Yury "

"Selivanov in :issue:`32528`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:654

msgid ""

"On Windows, the default event loop is now :class:`~asyncio."

"ProactorEventLoop`. (Contributed by Victor Stinner in :issue:`34687`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:657

msgid ""

":class:`~asyncio.ProactorEventLoop` now also supports UDP. (Contributed by "

"Adam Meily and Andrew Svetlov in :issue:`29883`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:660

msgid ""

":class:`~asyncio.ProactorEventLoop` can now be interrupted by :exc:"

"`KeyboardInterrupt` (\"CTRL+C\"). (Contributed by Vladimir Matveev in :issue:"

"`23057`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:664

msgid ""

"Added :meth:`asyncio.Task.get_coro` for getting the wrapped coroutine within "

"an :class:`asyncio.Task`. (Contributed by Alex Grönholm in :issue:`36999`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:668

msgid ""

"Asyncio tasks can now be named, either by passing the ``name`` keyword "

"argument to :func:`asyncio.create_task` or the :meth:`~asyncio.loop."

"create_task` event loop method, or by calling the :meth:`~asyncio.Task."

"set_name` method on the task object. The task name is visible in the "

"``repr()`` output of :class:`asyncio.Task` and can also be retrieved using "

"the :meth:`~asyncio.Task.get_name` method. (Contributed by Alex Grönholm in :"

"issue:`34270`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:676

msgid ""

"Added support for `Happy Eyeballs <https://en.wikipedia.org/wiki/"

"Happy_Eyeballs>`_ to :func:`asyncio.loop.create_connection`. To specify the "

"behavior, two new parameters have been added: *happy_eyeballs_delay* and "

"*interleave*. The Happy Eyeballs algorithm improves responsiveness in "

"applications that support IPv4 and IPv6 by attempting to simultaneously "

"connect using both. (Contributed by twisteroid ambassador in :issue:`33530`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:686

msgid "builtins"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:688

msgid ""

"The :func:`compile` built-in has been improved to accept the ``ast."

"PyCF_ALLOW_TOP_LEVEL_AWAIT`` flag. With this new flag passed, :func:"

"`compile` will allow top-level ``await``, ``async for`` and ``async with`` "

"constructs that are usually considered invalid syntax. Asynchronous code "

"object marked with the ``CO_COROUTINE`` flag may then be returned. "

"(Contributed by Matthias Bussonnier in :issue:`34616`)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:697

msgid "collections"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:699

msgid ""

"The :meth:`~collections.somenamedtuple._asdict` method for :func:"

"`collections.namedtuple` now returns a :class:`dict` instead of a :class:"

"`collections.OrderedDict`. This works because regular dicts have guaranteed "

"ordering since Python 3.7. If the extra features of :class:`OrderedDict` are "

"required, the suggested remediation is to cast the result to the desired "

"type: ``OrderedDict(nt._asdict())``. (Contributed by Raymond Hettinger in :"

"issue:`35864`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:709

msgid "cProfile"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:711

msgid ""

"The :class:`cProfile.Profile <profile.Profile>` class can now be used as a "

"context manager. Profile a block of code by running::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:720

msgid "(Contributed by Scott Sanderson in :issue:`29235`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:724

msgid "csv"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:726

msgid ""

"The :class:`csv.DictReader` now returns instances of :class:`dict` instead "

"of a :class:`collections.OrderedDict`. The tool is now faster and uses less "

"memory while still preserving the field order. (Contributed by Michael Selik "

"in :issue:`34003`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:733

msgid "curses"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:735

msgid ""

"Added a new variable holding structured version information for the "

"underlying ncurses library: :data:`~curses.ncurses_version`. (Contributed by "

"Serhiy Storchaka in :issue:`31680`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:741

msgid "ctypes"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:743

msgid ""

"On Windows, :class:`~ctypes.CDLL` and subclasses now accept a *winmode* "

"parameter to specify flags for the underlying ``LoadLibraryEx`` call. The "

"default flags are set to only load DLL dependencies from trusted locations, "

"including the path where the DLL is stored (if a full or partial path is "

"used to load the initial DLL) and paths added by :func:`~os."

"add_dll_directory`. (Contributed by Steve Dower in :issue:`36085`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:752

msgid "datetime"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:754

msgid ""

"Added new alternate constructors :meth:`datetime.date.fromisocalendar` and :"

"meth:`datetime.datetime.fromisocalendar`, which construct :class:`date` and :"

"class:`datetime` objects respectively from ISO year, week number, and "

"weekday; these are the inverse of each class's ``isocalendar`` method. "

"(Contributed by Paul Ganssle in :issue:`36004`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:762

msgid "functools"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:764

msgid ""

":func:`functools.lru_cache` can now be used as a straight decorator rather "

"than as a function returning a decorator. So both of these are now "

"supported::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:775

msgid "(Contributed by Raymond Hettinger in :issue:`36772`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:777

msgid ""

"Added a new :func:`functools.cached_property` decorator, for computed "

"properties cached for the life of the instance. ::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:791

msgid "(Contributed by Carl Meyer in :issue:`21145`)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:794

msgid ""

"Added a new :func:`functools.singledispatchmethod` decorator that converts "

"methods into :term:`generic functions <generic function>` using :term:"

"`single dispatch`::"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:816

msgid "(Contributed by Ethan Smith in :issue:`32380`)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:819

msgid "gc"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:821

msgid ""

":func:`~gc.get_objects` can now receive an optional *generation* parameter "

"indicating a generation to get objects from. (Contributed by Pablo Galindo "

"in :issue:`36016`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:827

msgid "gettext"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:829

msgid ""

"Added :func:`~gettext.pgettext` and its variants. (Contributed by Franz "

"Glasner, Éric Araujo, and Cheryl Sabella in :issue:`2504`.)"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:834

msgid "gzip"

msgstr ""

#: ../Doc/whatsnew/3.8.rst:836

msgid ""

"Added the *mtime* parameter to :func:`gzip.compress` for reproducible "

"output. (Contributed by Guo Ci Teo in :issue:`34898`.)"

msgstr ""