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bpo-32996: Improve What's New in 3.7. (GH-5983)
(cherry picked from commit 51302a5fcc)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This commit is contained in:
Miss Islington (bot)
GitHub
parent
17b6c19d39
commit
720a4b69c6
2 changed files with 131 additions and 123 deletions
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@ -289,11 +289,13 @@ algorithms implemented in this module in other circumstances.
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This function is deprecated in this module. Use :func:`urllib.parse.parse_qs`
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instead. It is maintained here only for backward compatibility.
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.. function:: parse_qsl(qs, keep_blank_values=False, strict_parsing=False)
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This function is deprecated in this module. Use :func:`urllib.parse.parse_qsl`
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instead. It is maintained here only for backward compatibility.
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.. function:: parse_multipart(fp, pdict, encoding="utf-8")
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Parse input of type :mimetype:`multipart/form-data` (for file uploads).
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@ -309,6 +311,10 @@ algorithms implemented in this module in other circumstances.
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uploaded --- in that case, use the :class:`FieldStorage` class instead
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which is much more flexible.
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.. versionchanged:: 3.7
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Added the *encoding* parameter. For non-file fields, the value is now
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a list of strings, not bytes.
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.. function:: parse_header(string)
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@ -91,17 +91,17 @@ rather than ASCII.
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The platform support definition in :pep:`11` has also been updated to limit
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full text handling support to suitably configured non-ASCII based locales.
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As part of this change, the default error handler for ``stdin`` and ``stdout``
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is now ``surrogateescape`` (rather than ``strict``) when using any of the
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defined coercion target locales (currently ``C.UTF-8``, ``C.utf8``, and
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``UTF-8``). The default error handler for ``stderr`` continues to be
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``backslashreplace``, regardless of locale.
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As part of this change, the default error handler for :data:`~sys.stdin` and
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:data:`~sys.stdout` is now ``surrogateescape`` (rather than ``strict``) when
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using any of the defined coercion target locales (currently ``C.UTF-8``,
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``C.utf8``, and ``UTF-8``). The default error handler for :data:`~sys.stderr`
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continues to be ``backslashreplace``, regardless of locale.
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Locale coercion is silent by default, but to assist in debugging potentially
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locale related integration problems, explicit warnings (emitted directly on
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``stderr`` can be requested by setting ``PYTHONCOERCECLOCALE=warn``. This
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setting will also cause the Python runtime to emit a warning if the legacy C
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locale remains active when the core interpreter is initialized.
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:data:`~sys.stderr` can be requested by setting ``PYTHONCOERCECLOCALE=warn``.
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This setting will also cause the Python runtime to emit a warning if the
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legacy C locale remains active when the core interpreter is initialized.
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.. seealso::
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@ -114,9 +114,9 @@ locale remains active when the core interpreter is initialized.
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PEP 553: Built-in breakpoint()
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------------------------------
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:pep:`553` describes a new built-in called ``breakpoint()`` which makes it
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:pep:`553` describes a new built-in called :func:`breakpoint` which makes it
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easy and consistent to enter the Python debugger. Built-in ``breakpoint()``
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calls ``sys.breakpointhook()``. By default, this latter imports ``pdb`` and
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calls :func:`sys.breakpointhook`. By default, this latter imports :mod:`pdb` and
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then calls ``pdb.set_trace()``, but by binding ``sys.breakpointhook()`` to the
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function of your choosing, ``breakpoint()`` can enter any debugger. Or, the
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environment variable :envvar:`PYTHONBREAKPOINT` can be set to the callable of
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@ -166,12 +166,12 @@ PEP 562: Customization of access to module attributes
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It is sometimes convenient to customize or otherwise have control over access
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to module attributes. A typical example is managing deprecation warnings.
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Typical workarounds are assigning ``__class__`` of a module object to
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a custom subclass of :class:`types.ModuleType` or replacing the ``sys.modules``
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item with a custom wrapper instance. This procedure is now simplified by
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recognizing ``__getattr__`` defined directly in a module that would act like
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a normal ``__getattr__`` method, except that it will be defined on module
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*instances*.
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Typical workarounds are assigning :attr:`~instance.__class__` of a module
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object to a custom subclass of :class:`types.ModuleType` or replacing the
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:data:`sys.modules` item with a custom wrapper instance. This procedure is
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now simplified by recognizing ``__getattr__`` defined directly in a module
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that would act like a normal :meth:`__getattr__` method, except that it will
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be defined on module *instances*.
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.. seealso::
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@ -217,7 +217,7 @@ following syntax valid::
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...
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Since this change breaks compatibility, the new behavior can be enabled
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on a per-module basis in Python 3.7 using a ``__future__`` import, like
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on a per-module basis in Python 3.7 using a :mod:`__future__` import, like
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this::
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from __future__ import annotations
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@ -263,7 +263,7 @@ PEP 565: Show DeprecationWarning in ``__main__``
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The default handling of :exc:`DeprecationWarning` has been changed such that
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these warnings are once more shown by default, but only when the code
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triggering them is running directly in the ``__main__`` module. As a result,
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triggering them is running directly in the :mod:`__main__` module. As a result,
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developers of single file scripts and those using Python interactively should
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once again start seeing deprecation warnings for the APIs they use, but
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deprecation warnings triggered by imported application, library and framework
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@ -275,7 +275,7 @@ between three different deprecation warning behaviours:
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* :exc:`FutureWarning`: always displayed by default, recommended for warnings
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intended to be seen by application end users (e.g. for deprecated application
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configuration settings).
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* :exc:`DeprecationWarning`: displayed by default only in ``__main__`` and when
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* :exc:`DeprecationWarning`: displayed by default only in :mod:`__main__` and when
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running tests, recommended for warnings intended to be seen by other Python
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developers where a version upgrade may result in changed behaviour or an
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error.
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@ -316,11 +316,11 @@ environment variable are added to control the UTF-8 mode.
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PEP 557: Data Classes
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---------------------
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Adds a new module ``dataclasses``. It provides a class decorator
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``dataclass`` which inspects the class's variable annotations (see
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Adds a new module :mod:`dataclasses`. It provides a class decorator
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:func:`~dataclasses.dataclass` which inspects the class's variable annotations (see
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:pep:`526`) and using them, adds methods such as ``__init__``,
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``__repr__``, and ``__eq__`` to the class. It is similar to
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``typing.NamedTuple``, but also works on classes with mutable
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:class:`typing.NamedTuple`, but also works on classes with mutable
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instances, among other features.
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For example::
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@ -407,7 +407,8 @@ Other Language Changes
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whitespace, not only spaces. (Contributed by Robert Xiao in :issue:`28927`.)
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* :exc:`ImportError` now displays module name and module ``__file__`` path when
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``from ... import ...`` fails. (Contributed by Matthias Bussonnier in :issue:`29546`.)
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``from ... import ...`` fails. (Contributed by Matthias Bussonnier in
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:issue:`29546`.)
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* Circular imports involving absolute imports with binding a submodule to
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a name are now supported.
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@ -453,7 +454,6 @@ the user intermix options and positional arguments on the command line,
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as is possible in many unix commands. It supports most but not all
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argparse features. (Contributed by paul.j3 in :issue:`14191`.)
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binascii
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--------
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@ -461,7 +461,6 @@ The :func:`~binascii.b2a_uu` function now accepts an optional *backtick*
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keyword argument. When it's true, zeros are represented by ``'`'``
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instead of spaces. (Contributed by Xiang Zhang in :issue:`30103`.)
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calendar
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--------
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@ -469,14 +468,6 @@ The class :class:`~calendar.HTMLCalendar` has new class attributes which ease
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the customisation of the CSS classes in the produced HTML calendar.
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(Contributed by Oz Tiram in :issue:`30095`.)
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cgi
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---
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:func:`~cgi.parse_multipart` returns the same results as
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:class:`~FieldStorage` : for non-file fields, the value associated to a key
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is a list of strings, not bytes.
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(Contributed by Pierre Quentel in :issue:`29979`.)
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contextlib
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----------
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@ -490,8 +481,8 @@ Alexander Mohr and Ilya Kulakov in :issue:`29302`.)
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cProfile
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--------
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cProfile command line now accepts `-m module_name` as an alternative to
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script path. (Contributed by Sanyam Khurana in :issue:`21862`.)
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:mod:`cProfile` command line now accepts ``-m module_name`` as an alternative
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to script path. (Contributed by Sanyam Khurana in :issue:`21862`.)
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crypt
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-----
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@ -505,10 +496,11 @@ for hashing. (Contributed by Serhiy Storchaka in :issue:`31702`.)
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datetime
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--------
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Added the :func:`datetime.datetime.fromisoformat` method, which constructs a
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:class:`datetime.datetime` object from a string in one of the formats output
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by :func:`datetime.datetime.isoformat`. (Contributed by Paul Ganssle in
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:issue:`15873`.)
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Added the :meth:`datetime.fromisoformat <datetime.datetime.fromisoformat>`
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method, which constructs a :class:`~datetime.datetime` object from a string
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in one of the formats output by
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:meth:`datetime.isoformat <datetime.datetime.isoformat>`.
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(Contributed by Paul Ganssle in :issue:`15873`.)
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dis
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---
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@ -521,7 +513,7 @@ classes). (Contributed by Serhiy Storchaka in :issue:`11822`.)
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distutils
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---------
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README.rst is now included in the list of distutils standard READMEs and
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``README.rst`` is now included in the list of distutils standard READMEs and
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therefore included in source distributions.
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(Contributed by Ryan Gonzalez in :issue:`11913`.)
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@ -537,28 +529,29 @@ equivalent to CR.
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http.client
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-----------
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Add Configurable *blocksize* to ``HTTPConnection`` and
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``HTTPSConnection`` for improved upload throughput.
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Add configurable *blocksize* to :class:`~http.client.HTTPConnection` and
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:class:`~http.client.HTTPSConnection` for improved upload throughput.
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(Contributed by Nir Soffer in :issue:`31945`.)
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http.server
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-----------
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:class:`~http.server.SimpleHTTPRequestHandler` supports the HTTP
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If-Modified-Since header. The server returns the 304 response status if the
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``If-Modified-Since`` header. The server returns the 304 response status if the
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target file was not modified after the time specified in the header.
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(Contributed by Pierre Quentel in :issue:`29654`.)
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Add the parameter ``directory`` to the :class:`~http.server.SimpleHTTPRequestHandler`
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and the ``--directory`` to the command line of the module :mod:`~http.server`.
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With this parameter, the server serves the specified directory, by default it uses the current working directory.
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Add the parameter *directory* to the :class:`~http.server.SimpleHTTPRequestHandler`
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and the ``--directory`` to the command line of the module :mod:`http.server`.
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With this parameter, the server serves the specified directory, by default it
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uses the current working directory.
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(Contributed by Stéphane Wirtel and Julien Palard in :issue:`28707`.)
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hmac
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----
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The hmac module now has an optimized one-shot :func:`~hmac.digest` function,
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which is up to three times faster than :func:`~hmac.HMAC`.
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The :mod:`hmac` module now has an optimized one-shot :func:`~hmac.digest`
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function, which is up to three times faster than :func:`~hmac.HMAC`.
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(Contributed by Christian Heimes in :issue:`32433`.)
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importlib
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@ -570,11 +563,11 @@ support the loading of resource from packages.
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locale
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------
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Added another argument *monetary* in :meth:`format_string` of :mod:`locale`.
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Added another argument *monetary* in :func:`~locale.format_string` of :mod:`locale`.
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If *monetary* is true, the conversion uses monetary thousands separator and
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grouping strings. (Contributed by Garvit in :issue:`10379`.)
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The :func:`locale.getpreferredencoding` function now always returns ``'UTF-8'``
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The :func:`~locale.getpreferredencoding` function now always returns ``'UTF-8'``
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on Android or in the UTF-8 mode (:option:`-X` ``utf8`` option), the locale and
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the *do_setlocale* argument are ignored.
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@ -593,7 +586,7 @@ Serhiy Storchaka in :issue:`28682`.)
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Added support for :ref:`file descriptors <path_fd>` in :func:`~os.scandir`
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on Unix. (Contributed by Serhiy Storchaka in :issue:`25996`.)
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New function :func:`os.register_at_fork` allows registering Python callbacks
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New function :func:`~os.register_at_fork` allows registering Python callbacks
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to be executed on a process fork. (Contributed by Antoine Pitrou in
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:issue:`16500`.)
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@ -604,7 +597,7 @@ pdb
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argument. If given, this is printed to the console just before debugging
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begins. (Contributed by Barry Warsaw in :issue:`31389`.)
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pdb command line now accepts `-m module_name` as an alternative to
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:mod:`pdb` command line now accepts ``-m module_name`` as an alternative to
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script file. (Contributed by Mario Corchero in :issue:`32206`.)
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py_compile
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@ -618,7 +611,6 @@ This allows for guaranteeing
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files when they are created eagerly. (Contributed by Bernhard M. Wiedemann
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in :issue:`29708`.)
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re
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--
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@ -642,7 +634,7 @@ method, if the underlying SQLite library is at version 3.6.11 or higher.
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ssl
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---
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The ssl module now uses OpenSSL's builtin API instead of
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The :mod:`ssl` module now uses OpenSSL's builtin API instead of
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:func:`~ssl.match_hostname` to check host name or IP address. Values
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are validated during TLS handshake. Any cert validation error including
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a failing host name match now raises :exc:`~ssl.SSLCertVerificationError` and
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@ -682,10 +674,6 @@ The ssl module has preliminary and experimental support for TLS 1.3 and
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OpenSSL 1.1.1. (Contributed by Christian Heimes in :issue:`32947`,
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:issue:`20995`, :issue:`29136`, and :issue:`30622`)
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:func:`~ssl.wrap_socket` is deprecated. Documentation has been updated to
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recommend :meth:`~ssl.SSLContext.wrap_socket` instead.
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(Contributed by Christian Heimes in :issue:`28124`.)
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:class:`~ssl.SSLSocket` and :class:`~ssl.SSLObject` no longer have a public
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constructor. Direct instantiation was never a documented and supported
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feature. Instances must be created with :class:`~ssl.SSLContext` methods
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@ -708,27 +696,24 @@ separately. (Contributed by Barry Warsaw in :issue:`1198569`.)
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subprocess
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----------
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On Windows the default for *close_fds* was changed from :const:`False` to
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:const:`True` when redirecting the standard handles. It's now possible to set
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*close_fds* to :const:`True` when redirecting the standard handles. See
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On Windows the default for *close_fds* was changed from ``False`` to
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``True`` when redirecting the standard handles. It's now possible to set
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*close_fds* to ``True`` when redirecting the standard handles. See
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:class:`subprocess.Popen`.
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This means that *close_fds* now defaults to :const:`True` on all supported
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platforms.
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This means that *close_fds* now defaults to ``True`` on all supported
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platforms. (Contributed by Segev Finer in :issue:`19764`.)
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sys
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---
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Added :attr:`sys.flags.dev_mode` flag for the new development mode.
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Deprecated :func:`sys.set_coroutine_wrapper` and
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:func:`sys.get_coroutine_wrapper`.
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tkinter
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-------
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Added :class:`tkinter.ttk.Spinbox`.
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(Contributed by Alan Moore in :issue:`32585`.)
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time
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----
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@ -766,11 +751,12 @@ Peterson.)
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unittest
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--------
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Added new command-line option ``-k`` to filter tests to run with a substring or
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Unix shell-like pattern. For example, ``python -m unittest -k foo`` runs the
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tests ``foo_tests.SomeTest.test_something``, ``bar_tests.SomeTest.test_foo``,
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but not ``bar_tests.FooTest.test_something``.
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(Contributed by Jonas Haag in :issue:`32071`.)
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unittest.mock
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-------------
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@ -779,7 +765,7 @@ The :const:`~unittest.mock.sentinel` attributes now preserve their identity
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when they are :mod:`copied <copy>` or :mod:`pickled <pickle>`. (Contributed by
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Serhiy Storchaka in :issue:`20804`.)
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New function :const:`~unittest.mock.seal` will disable the creation of mock
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New function :func:`~unittest.mock.seal` will disable the creation of mock
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children by preventing to get or set any new attribute on the sealed mock.
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The sealing process is performed recursively. (Contributed by Mario Corchero
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in :issue:`30541`.)
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@ -787,8 +773,8 @@ in :issue:`30541`.)
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urllib.parse
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------------
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:func:`urllib.parse.quote` has been updated from RFC 2396 to RFC 3986,
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adding `~` to the set of characters that is never quoted by default.
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:func:`urllib.parse.quote` has been updated from :rfc:`2396` to :rfc:`3986`,
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adding ``~`` to the set of characters that is never quoted by default.
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(Contributed by Christian Theune and Ratnadeep Debnath in :issue:`16285`.)
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uu
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@ -832,26 +818,27 @@ better readability. (Contributed by Stefan Behnel in :issue:`31648`.)
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xmlrpc.server
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-------------
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:meth:`register_function` of :class:`xmlrpc.server.SimpleXMLRPCDispatcher` and
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:meth:`register_function` of :class:`~xmlrpc.server.SimpleXMLRPCDispatcher` and
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its subclasses can be used as a decorator. (Contributed by Xiang Zhang in
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:issue:`7769`.)
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|
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zipapp
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------
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|
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Function :func:`zipapp.create_archive` now accepts an optional *filter*
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Function :func:`~zipapp.create_archive` now accepts an optional *filter*
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argument to allow the user to select which files should be included in the
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archive, and an optional *compressed* argument to generate a compressed
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archive.
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archive. (Contributed by Irmen de Jong in :issue:`31072`.)
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A command line option ``--compress`` has also been added to support
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compression.
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Function :func:`~zipapp.create_archive` now accepts an optional *compressed*
|
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argument to generate a compressed archive. A command line option
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``--compress`` has also been added to support compression.
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(Contributed by Zhiming Wang in :issue:`31638`.)
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|
||||
Optimizations
|
||||
=============
|
||||
|
||||
* Added two new opcodes: ``LOAD_METHOD`` and ``CALL_METHOD`` to avoid
|
||||
* Added two new opcodes: :opcode:`LOAD_METHOD` and :opcode:`CALL_METHOD` to avoid
|
||||
instantiation of bound method objects for method calls, which results
|
||||
in method calls being faster up to 20%. (Contributed by Yury Selivanov and
|
||||
INADA Naoki in :issue:`26110`.)
|
||||
|
|
@ -882,8 +869,9 @@ Optimizations
|
|||
Python 3.6 by about 10% depending on the pattern.
|
||||
(Contributed by INADA Naoki in :issue:`31671`.)
|
||||
|
||||
* :meth:`selectors.EpollSelector.modify`, :meth:`selectors.PollSelector.modify`
|
||||
and :meth:`selectors.DevpollSelector.modify` may be around 10% faster under
|
||||
* :meth:`~selectors.BaseSelector.modify` methods of classes
|
||||
:class:`selectors.EpollSelector`, :class:`selectors.PollSelector`
|
||||
and :class:`selectors.DevpollSelector` may be around 10% faster under
|
||||
heavy loads. (Contributed by Giampaolo Rodola' in :issue:`30014`)
|
||||
|
||||
* Constant folding is moved from peephole optimizer to new AST optimizer.
|
||||
|
|
@ -900,6 +888,7 @@ Optimizations
|
|||
constructors when not constructing subclasses. (Contributed by Paul Ganssle
|
||||
in :issue:`32403`)
|
||||
|
||||
|
||||
Build and C API Changes
|
||||
=======================
|
||||
|
||||
|
|
@ -955,6 +944,16 @@ Build and C API Changes
|
|||
and access to the UTC singleton with :c:data:`PyDateTime_TimeZone_UTC`.
|
||||
Contributed by Paul Ganssle in :issue:`10381`.
|
||||
|
||||
- The type of results of :c:func:`PyThread_start_new_thread` and
|
||||
:c:func:`PyThread_get_thread_ident`, and the *id* parameter of
|
||||
:c:func:`PyThreadState_SetAsyncExc` changed from :c:type:`long` to
|
||||
:c:type:`unsigned long`.
|
||||
(Contributed by Serhiy Storchaka in :issue:`6532`.)
|
||||
|
||||
- :c:func:`PyUnicode_AsWideCharString` now raises a :exc:`ValueError` if the
|
||||
second argument is *NULL* and the :c:type:`wchar_t*` string contains null
|
||||
characters. (Contributed by Serhiy Storchaka in :issue:`30708`.)
|
||||
|
||||
|
||||
Other CPython Implementation Changes
|
||||
====================================
|
||||
|
|
@ -1007,13 +1006,13 @@ Deprecated
|
|||
- Methods
|
||||
:meth:`MetaPathFinder.find_module() <importlib.abc.MetaPathFinder.find_module>`
|
||||
(replaced by
|
||||
:meth:`MetaPathFinder.find_spec() <importlib.abc.MetaPathFinder.find_spec>`
|
||||
) and
|
||||
:meth:`MetaPathFinder.find_spec() <importlib.abc.MetaPathFinder.find_spec>`)
|
||||
and
|
||||
:meth:`PathEntryFinder.find_loader() <importlib.abc.PathEntryFinder.find_loader>`
|
||||
(replaced by
|
||||
:meth:`PathEntryFinder.find_spec() <importlib.abc.PathEntryFinder.find_spec>`)
|
||||
both deprecated in Python 3.4 now emit :exc:`DeprecationWarning`. (Contributed
|
||||
by Matthias Bussonnier in :issue:`29576`)
|
||||
both deprecated in Python 3.4 now emit :exc:`DeprecationWarning`.
|
||||
(Contributed by Matthias Bussonnier in :issue:`29576`)
|
||||
|
||||
- Using non-integer value for selecting a plural form in :mod:`gettext` is
|
||||
now deprecated. It never correctly worked. (Contributed by Serhiy Storchaka
|
||||
|
|
@ -1024,23 +1023,17 @@ Deprecated
|
|||
- The :class:`importlib.abc.ResourceLoader` ABC has been deprecated in
|
||||
favour of :class:`importlib.abc.ResourceReader`.
|
||||
|
||||
- Deprecated :func:`sys.set_coroutine_wrapper` and
|
||||
:func:`sys.get_coroutine_wrapper`.
|
||||
|
||||
Changes in the C API
|
||||
--------------------
|
||||
|
||||
- The type of results of :c:func:`PyThread_start_new_thread` and
|
||||
:c:func:`PyThread_get_thread_ident`, and the *id* parameter of
|
||||
:c:func:`PyThreadState_SetAsyncExc` changed from :c:type:`long` to
|
||||
:c:type:`unsigned long`.
|
||||
(Contributed by Serhiy Storchaka in :issue:`6532`.)
|
||||
|
||||
- :c:func:`PyUnicode_AsWideCharString` now raises a :exc:`ValueError` if the
|
||||
second argument is *NULL* and the :c:type:`wchar_t*` string contains null
|
||||
characters. (Contributed by Serhiy Storchaka in :issue:`30708`.)
|
||||
- :func:`ssl.wrap_socket` is deprecated. Use
|
||||
:meth:`ssl.SSLContext.wrap_socket` instead.
|
||||
(Contributed by Christian Heimes in :issue:`28124`.)
|
||||
|
||||
|
||||
Windows Only
|
||||
------------
|
||||
|
||||
- The python launcher, (py.exe), can accept 32 & 64 bit specifiers **without**
|
||||
having to specify a minor version as well. So ``py -3-32`` and ``py -3-64``
|
||||
become valid as well as ``py -3.7-32``, also the -*m*-64 and -*m.n*-64 forms
|
||||
|
|
@ -1054,6 +1047,7 @@ Windows Only
|
|||
the *short form* list of available specifiers.
|
||||
(Contributed by Steve Barnes in :issue:`30362`.)
|
||||
|
||||
|
||||
Removed
|
||||
=======
|
||||
|
||||
|
|
@ -1096,6 +1090,17 @@ API and Feature Removals
|
|||
:func:`~plistlib.readPlistFromBytes` are now normal dicts. You no longer
|
||||
can use attribute access to access items of these dictionaries.
|
||||
|
||||
* The ``asyncio.windows_utils.socketpair()`` function has been
|
||||
removed: use directly :func:`socket.socketpair` which is available on all
|
||||
platforms since Python 3.5 (before, it wasn't available on Windows).
|
||||
``asyncio.windows_utils.socketpair`` was just an alias to
|
||||
``socket.socketpair`` on Python 3.5 and newer.
|
||||
|
||||
* :mod:`asyncio`: The module doesn't export :mod:`selectors` and
|
||||
:mod:`_overlapped` modules as ``asyncio.selectors`` and
|
||||
``asyncio._overlapped``. Replace ``from asyncio import selectors`` with
|
||||
``import selectors`` for example.
|
||||
|
||||
|
||||
Porting to Python 3.7
|
||||
=====================
|
||||
|
|
@ -1133,27 +1138,18 @@ Changes in the Python API
|
|||
|
||||
* :meth:`socketserver.ThreadingMixIn.server_close` now waits until all
|
||||
non-daemon threads complete. Use daemonic threads by setting
|
||||
:data:`ThreadingMixIn.daemon_threads` to ``True`` to not wait until threads
|
||||
complete. (Contributed by Victor Stinner in :issue:`31233`.)
|
||||
:data:`socketserver.ThreadingMixIn.daemon_threads` to ``True`` to not
|
||||
wait until threads complete.
|
||||
(Contributed by Victor Stinner in :issue:`31233`.)
|
||||
|
||||
* :meth:`socketserver.ForkingMixIn.server_close` now waits until all
|
||||
child processes complete. (Contributed by Victor Stinner in :issue:`31151`.)
|
||||
|
||||
* The :func:`locale.localeconv` function now sets temporarily the ``LC_CTYPE``
|
||||
locale to the ``LC_NUMERIC`` locale in some cases.
|
||||
(Contributed by Victor Stinner in :issue:`31900`.)
|
||||
|
||||
* The ``asyncio.windows_utils.socketpair()`` function has been
|
||||
removed: use directly :func:`socket.socketpair` which is available on all
|
||||
platforms since Python 3.5 (before, it wasn't available on Windows).
|
||||
``asyncio.windows_utils.socketpair()`` was just an alias to
|
||||
``socket.socketpair`` on Python 3.5 and newer.
|
||||
|
||||
* :mod:`asyncio`: The module doesn't export :mod:`selectors` and
|
||||
:mod:`_overlapped` modules as ``asyncio.selectors`` and
|
||||
``asyncio._overlapped``. Replace ``from asyncio import selectors`` with
|
||||
``import selectors`` for example.
|
||||
|
||||
* :meth:`pkgutil.walk_packages` now raises ValueError if *path* is a string.
|
||||
* :meth:`pkgutil.walk_packages` now raises :exc:`ValueError` if *path* is a string.
|
||||
Previously an empty list was returned. (Contributed by Sanyam Khurana in
|
||||
:issue:`24744`.)
|
||||
|
||||
|
|
@ -1186,6 +1182,11 @@ Changes in the Python API
|
|||
* The :attr:`struct.Struct.format` type is now :class:`str` instead of
|
||||
:class:`bytes`. (Contributed by Victor Stinner in :issue:`21071`.)
|
||||
|
||||
* :func:`~cgi.parse_multipart` returns now the same results as
|
||||
:class:`~FieldStorage`: for non-file fields, the value associated to a key
|
||||
is a list of strings, not bytes.
|
||||
(Contributed by Pierre Quentel in :issue:`29979`.)
|
||||
|
||||
* Due to internal changes in :mod:`socket` you won't be able to
|
||||
:func:`socket.fromshare` a socket :func:`~socket.socket.share`-ed in older
|
||||
Python versions.
|
||||
|
|
@ -1207,6 +1208,8 @@ Changes in the Python API
|
|||
avoid a warning escape them with a backslash.
|
||||
(Contributed by Serhiy Storchaka in :issue:`30349`.)
|
||||
|
||||
.. _Unicode Technical Standard #18: https://unicode.org/reports/tr18/
|
||||
|
||||
* The result of splitting a string on a :mod:`regular expression <re>`
|
||||
that could match an empty string has been changed. For example
|
||||
splitting on ``r'\s*'`` will now split not only on whitespaces as it
|
||||
|
|
@ -1246,8 +1249,6 @@ Changes in the Python API
|
|||
work as expected on all platforms.
|
||||
(Contributed by Yury Selivanov in :issue:`32331`.)
|
||||
|
||||
.. _Unicode Technical Standard #18: https://unicode.org/reports/tr18/
|
||||
|
||||
* On Windows the default for the *close_fds* argument of
|
||||
:class:`subprocess.Popen` was changed from :const:`False` to :const:`True`
|
||||
when redirecting the standard handles. If you previously depended on handles
|
||||
|
|
@ -1276,7 +1277,8 @@ CPython bytecode changes
|
|||
* Added two new opcodes: :opcode:`LOAD_METHOD` and :opcode:`CALL_METHOD`.
|
||||
(Contributed by Yury Selivanov and INADA Naoki in :issue:`26110`.)
|
||||
|
||||
* Removed the STORE_ANNOTATION opcode.
|
||||
* Removed the :opcode:`STORE_ANNOTATION` opcode.
|
||||
(Contributed by Mark Shannon in :issue:`32550`.)
|
||||
|
||||
|
||||
Other CPython implementation changes
|
||||
|
|
@ -1293,8 +1295,8 @@ Other CPython implementation changes
|
|||
(Contributed by Nick Coghlan and Eric Snow as part of :issue:`22257`.)
|
||||
|
||||
* Due to changes in the way the default warnings filters are configured,
|
||||
setting ``Py_BytesWarningFlag`` to a value greater than one is no longer
|
||||
sufficient to both emit ``BytesWarning`` messages and have them converted
|
||||
setting :c:data:`Py_BytesWarningFlag` to a value greater than one is no longer
|
||||
sufficient to both emit :exc:`BytesWarning` messages and have them converted
|
||||
to exceptions. Instead, the flag must be set (to cause the warnings to be
|
||||
emitted in the first place), and an explicit ``error::BytesWarning``
|
||||
warnings filter added to convert them to exceptions.
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue