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stable.po
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# SOME DESCRIPTIVE TITLE.
# Copyright (C) 2001-2022, Python Software Foundation
# This file is distributed under the same license as the Python package.
#
# Translators:
msgid ""
msgstr ""
"Project-Id-Version: Python 3.11\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2021-10-26 16:47+0000\n"
"PO-Revision-Date: 2016-11-19 00:26+0000\n"
"Last-Translator: Liang-Bo Wang <[email protected]>\n"
"Language-Team: Chinese - TAIWAN (https://github.com/python/python-docs-zh-"
"tw)\n"
"Language: zh_TW\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Plural-Forms: nplurals=1; plural=0;\n"
#: ../../c-api/stable.rst:7
msgid "C API Stability"
msgstr ""
#: ../../c-api/stable.rst:9
msgid ""
"Python's C API is covered by the Backwards Compatibility Policy, :pep:`387`. "
"While the C API will change with every minor release (e.g. from 3.9 to "
"3.10), most changes will be source-compatible, typically by only adding new "
"API. Changing existing API or removing API is only done after a deprecation "
"period or to fix serious issues."
msgstr ""
#: ../../c-api/stable.rst:15
msgid ""
"CPython's Application Binary Interface (ABI) is forward- and backwards-"
"compatible across a minor release (if these are compiled the same way; see :"
"ref:`stable-abi-platform` below). So, code compiled for Python 3.10.0 will "
"work on 3.10.8 and vice versa, but will need to be compiled separately for "
"3.9.x and 3.10.x."
msgstr ""
#: ../../c-api/stable.rst:21
msgid ""
"Names prefixed by an underscore, such as ``_Py_InternalState``, are private "
"API that can change without notice even in patch releases."
msgstr ""
#: ../../c-api/stable.rst:26
msgid "Stable Application Binary Interface"
msgstr ""
#: ../../c-api/stable.rst:28
msgid ""
"Python 3.2 introduced the *Limited API*, a subset of Python's C API. "
"Extensions that only use the Limited API can be compiled once and work with "
"multiple versions of Python. Contents of the Limited API are :ref:`listed "
"below <stable-abi-list>`."
msgstr ""
#: ../../c-api/stable.rst:33
msgid ""
"To enable this, Python provides a *Stable ABI*: a set of symbols that will "
"remain compatible across Python 3.x versions. The Stable ABI contains "
"symbols exposed in the Limited API, but also other ones – for example, "
"functions necessary to support older versions of the Limited API."
msgstr ""
#: ../../c-api/stable.rst:38
msgid ""
"(For simplicity, this document talks about *extensions*, but the Limited API "
"and Stable ABI work the same way for all uses of the API – for example, "
"embedding Python.)"
msgstr ""
#: ../../c-api/stable.rst:44
msgid ""
"Define this macro before including ``Python.h`` to opt in to only use the "
"Limited API, and to select the Limited API version."
msgstr ""
#: ../../c-api/stable.rst:47
msgid ""
"Define ``Py_LIMITED_API`` to the value of :c:data:`PY_VERSION_HEX` "
"corresponding to the lowest Python version your extension supports. The "
"extension will work without recompilation with all Python 3 releases from "
"the specified one onward, and can use Limited API introduced up to that "
"version."
msgstr ""
#: ../../c-api/stable.rst:53
msgid ""
"Rather than using the ``PY_VERSION_HEX`` macro directly, hardcode a minimum "
"minor version (e.g. ``0x030A0000`` for Python 3.10) for stability when "
"compiling with future Python versions."
msgstr ""
#: ../../c-api/stable.rst:57
msgid ""
"You can also define ``Py_LIMITED_API`` to ``3``. This works the same as "
"``0x03020000`` (Python 3.2, the version that introduced Limited API)."
msgstr ""
#: ../../c-api/stable.rst:60
msgid ""
"On Windows, extensions that use the Stable ABI should be linked against "
"``python3.dll`` rather than a version-specific library such as ``python39."
"dll``."
msgstr ""
#: ../../c-api/stable.rst:64
msgid ""
"On some platforms, Python will look for and load shared library files named "
"with the ``abi3`` tag (e.g. ``mymodule.abi3.so``). It does not check if such "
"extensions conform to a Stable ABI. The user (or their packaging tools) need "
"to ensure that, for example, extensions built with the 3.10+ Limited API are "
"not installed for lower versions of Python."
msgstr ""
#: ../../c-api/stable.rst:71
msgid ""
"All functions in the Stable ABI are present as functions in Python's shared "
"library, not solely as macros. This makes them usable from languages that "
"don't use the C preprocessor."
msgstr ""
#: ../../c-api/stable.rst:77
msgid "Limited API Scope and Performance"
msgstr ""
#: ../../c-api/stable.rst:79
msgid ""
"The goal for the Limited API is to allow everything that is possible with "
"the full C API, but possibly with a performance penalty."
msgstr ""
#: ../../c-api/stable.rst:82
msgid ""
"For example, while :c:func:`PyList_GetItem` is available, its “unsafe” macro "
"variant :c:func:`PyList_GET_ITEM` is not. The macro can be faster because it "
"can rely on version-specific implementation details of the list object."
msgstr ""
#: ../../c-api/stable.rst:87
msgid ""
"Without ``Py_LIMITED_API`` defined, some C API functions are inlined or "
"replaced by macros. Defining ``Py_LIMITED_API`` disables this inlining, "
"allowing stability as Python's data structures are improved, but possibly "
"reducing performance."
msgstr ""
#: ../../c-api/stable.rst:92
msgid ""
"By leaving out the ``Py_LIMITED_API`` definition, it is possible to compile "
"a Limited API extension with a version-specific ABI. This can improve "
"performance for that Python version, but will limit compatibility. Compiling "
"with ``Py_LIMITED_API`` will then yield an extension that can be distributed "
"where a version-specific one is not available – for example, for prereleases "
"of an upcoming Python version."
msgstr ""
#: ../../c-api/stable.rst:101
msgid "Limited API Caveats"
msgstr ""
#: ../../c-api/stable.rst:103
msgid ""
"Note that compiling with ``Py_LIMITED_API`` is *not* a complete guarantee "
"that code conforms to the Limited API or the Stable ABI. ``Py_LIMITED_API`` "
"only covers definitions, but an API also includes other issues, such as "
"expected semantics."
msgstr ""
#: ../../c-api/stable.rst:108
msgid ""
"One issue that ``Py_LIMITED_API`` does not guard against is calling a "
"function with arguments that are invalid in a lower Python version. For "
"example, consider a function that starts accepting ``NULL`` for an argument. "
"In Python 3.9, ``NULL`` now selects a default behavior, but in Python 3.8, "
"the argument will be used directly, causing a ``NULL`` dereference and "
"crash. A similar argument works for fields of structs."
msgstr ""
#: ../../c-api/stable.rst:115
msgid ""
"Another issue is that some struct fields are currently not hidden when "
"``Py_LIMITED_API`` is defined, even though they're part of the Limited API."
msgstr ""
#: ../../c-api/stable.rst:118
msgid ""
"For these reasons, we recommend testing an extension with *all* minor Python "
"versions it supports, and preferably to build with the *lowest* such version."
msgstr ""
#: ../../c-api/stable.rst:121
msgid ""
"We also recommend reviewing documentation of all used API to check if it is "
"explicitly part of the Limited API. Even with ``Py_LIMITED_API`` defined, a "
"few private declarations are exposed for technical reasons (or even "
"unintentionally, as bugs)."
msgstr ""
#: ../../c-api/stable.rst:126
msgid ""
"Also note that the Limited API is not necessarily stable: compiling with "
"``Py_LIMITED_API`` with Python 3.8 means that the extension will run with "
"Python 3.12, but it will not necessarily *compile* with Python 3.12. In "
"particular, parts of the Limited API may be deprecated and removed, provided "
"that the Stable ABI stays stable."
msgstr ""
#: ../../c-api/stable.rst:136
msgid "Platform Considerations"
msgstr ""
#: ../../c-api/stable.rst:138
msgid ""
"ABI stability depends not only on Python, but also on the compiler used, "
"lower-level libraries and compiler options. For the purposes of the Stable "
"ABI, these details define a “platform”. They usually depend on the OS type "
"and processor architecture"
msgstr ""
#: ../../c-api/stable.rst:143
msgid ""
"It is the responsibility of each particular distributor of Python to ensure "
"that all Python versions on a particular platform are built in a way that "
"does not break the Stable ABI. This is the case with Windows and macOS "
"releases from ``python.org`` and many third-party distributors."
msgstr ""
#: ../../c-api/stable.rst:153
msgid "Contents of Limited API"
msgstr ""
#: ../../c-api/stable.rst:156
msgid "Currently, the Limited API includes the following items:"
msgstr ""