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#, fuzzy

msgid ""

msgstr ""

"Project-Id-Version: Python 3.9\n"

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#: ../../library/__future__.rst:2

msgid ":mod:`__future__` --- Future statement definitions"

msgstr ":mod:`__future__` --- Future 语句定义"

#: ../../library/__future__.rst:7

msgid "**Source code:** :source:`Lib/__future__.py`"

msgstr "**源代码：** :source:`Lib/__future__.py`"

#: ../../library/__future__.rst:11

msgid ":mod:`__future__` is a real module, and serves three purposes:"

msgstr ":mod:`__future__` 是一个真正的模块，这主要有 3 个原因："

#: ../../library/__future__.rst:13

msgid ""

"To avoid confusing existing tools that analyze import statements and expect "

"to find the modules they're importing."

msgstr "避免混淆已有的分析 import 语句并查找 import 的模块的工具。"

#: ../../library/__future__.rst:16

msgid ""

"To ensure that :ref:`future statements <future>` run under releases prior to"

" 2.1 at least yield runtime exceptions (the import of :mod:`__future__` will"

" fail, because there was no module of that name prior to 2.1)."

msgstr ""

"确保 :ref:`future 语句 <future>` 在 2.1 之前的版本运行时至少能抛出 runtime 异常（import "

":mod:`__future__` 会失败，因为 2.1 版本之前没有这个模块）。"

#: ../../library/__future__.rst:20

msgid ""

"To document when incompatible changes were introduced, and when they will be"

" --- or were --- made mandatory. This is a form of executable "

"documentation, and can be inspected programmatically via importing "

":mod:`__future__` and examining its contents."

msgstr ""

"当引入不兼容的修改时，可以记录其引入的时间以及强制使用的时间。这是一种可执行的文档，并且可以通过 import :mod:`__future__` "

"来做程序性的检查。"

#: ../../library/__future__.rst:25

msgid "Each statement in :file:`__future__.py` is of the form::"

msgstr ":file:`__future__.py` 中的每一条语句都是以下格式的："

#: ../../library/__future__.rst:31

msgid ""

"where, normally, *OptionalRelease* is less than *MandatoryRelease*, and both"

" are 5-tuples of the same form as :data:`sys.version_info`::"

msgstr ""

"通常 *OptionalRelease* 要比 *MandatoryRelease* 小，并且都是和 :data:`sys.version_info` "

"格式一致的 5 元素元组。"

#: ../../library/__future__.rst:41

msgid ""

"*OptionalRelease* records the first release in which the feature was "

"accepted."

msgstr "*OptionalRelease* 记录了一个特性首次发布时的 Python 版本。"

#: ../../library/__future__.rst:43

msgid ""

"In the case of a *MandatoryRelease* that has not yet occurred, "

"*MandatoryRelease* predicts the release in which the feature will become "

"part of the language."

msgstr "在 *MandatoryRelases* 还没有发布时，*MandatoryRelease* 表示该特性会变成语言的一部分的预测时间。"

#: ../../library/__future__.rst:47

msgid ""

"Else *MandatoryRelease* records when the feature became part of the "

"language; in releases at or after that, modules no longer need a future "

"statement to use the feature in question, but may continue to use such "

"imports."

msgstr ""

"其他情况下，*MandatoryRelease* 用来记录这个特性是何时成为语言的一部分的。从该版本往后，使用该特性将不需要 future "

"语句，不过很多人还是会加上对应的 import。"

#: ../../library/__future__.rst:51

msgid ""

"*MandatoryRelease* may also be ``None``, meaning that a planned feature got "

"dropped."

msgstr "*MandatoryRelease* 也可能是 ``None``, 表示这个特性已经被撤销。"

#: ../../library/__future__.rst:54

msgid ""

"Instances of class :class:`_Feature` have two corresponding methods, "

":meth:`getOptionalRelease` and :meth:`getMandatoryRelease`."

msgstr ""

":class:`_Feature` 类的实例有两个对应的方法，:meth:`getOptionalRelease` 和 "

":meth:`getMandatoryRelease`。"

#: ../../library/__future__.rst:57

msgid ""

"*CompilerFlag* is the (bitfield) flag that should be passed in the fourth "

"argument to the built-in function :func:`compile` to enable the feature in "

"dynamically compiled code. This flag is stored in the :attr:`compiler_flag`"

" attribute on :class:`_Feature` instances."

msgstr ""

"*CompilerFlag* 是一个（位）标记，对于动态编译的代码，需要将这个标记作为第四个参数传入内建函数 :func:`compile` "

"中以开启对应的特性。这个标记存储在 :class:`_Feature` 类实例的 :attr:`compiler_flag` 属性中。"

#: ../../library/__future__.rst:62

msgid ""

"No feature description will ever be deleted from :mod:`__future__`. Since "

"its introduction in Python 2.1 the following features have found their way "

"into the language using this mechanism:"

msgstr ":mod:`__future__` 中不会删除特性的描述。从 Python 2.1 中首次加入以来，通过这种方式引入了以下特性："

#: ../../library/__future__.rst:67

msgid "feature"

msgstr "特性"

#: ../../library/__future__.rst:67

msgid "optional in"

msgstr "可选版本"

#: ../../library/__future__.rst:67

msgid "mandatory in"

msgstr "强制加入版本"

#: ../../library/__future__.rst:67

msgid "effect"

msgstr "效果"

#: ../../library/__future__.rst:69

msgid "nested_scopes"

msgstr "nested_scopes"

#: ../../library/__future__.rst:69

msgid "2.1.0b1"

msgstr "2.1.0b1"

#: ../../library/__future__.rst:69

msgid "2.2"

msgstr "2.2"

#: ../../library/__future__.rst:69

msgid ":pep:`227`: *Statically Nested Scopes*"

msgstr ":pep:`227`: *静态嵌套作用域*"

#: ../../library/__future__.rst:72

msgid "generators"

msgstr "generators"

#: ../../library/__future__.rst:72

msgid "2.2.0a1"

msgstr "2.2.0a1"

#: ../../library/__future__.rst:72

msgid "2.3"

msgstr "2.3"

#: ../../library/__future__.rst:72

msgid ":pep:`255`: *Simple Generators*"

msgstr ":pep:`255`: *简单生成器*"

#: ../../library/__future__.rst:75

msgid "division"

msgstr "division"

#: ../../library/__future__.rst:75

msgid "2.2.0a2"

msgstr "2.2.0a2"

#: ../../library/__future__.rst:75 ../../library/__future__.rst:78

#: ../../library/__future__.rst:84 ../../library/__future__.rst:87

msgid "3.0"

msgstr "3.0"

#: ../../library/__future__.rst:75

msgid ":pep:`238`: *Changing the Division Operator*"

msgstr ":pep:`238`: *修改除法运算符*"

#: ../../library/__future__.rst:78

msgid "absolute_import"

msgstr "absolute_import"

#: ../../library/__future__.rst:78 ../../library/__future__.rst:81

msgid "2.5.0a1"

msgstr "2.5.0a1"

#: ../../library/__future__.rst:78

msgid ":pep:`328`: *Imports: Multi-Line and Absolute/Relative*"

msgstr ":pep:`328`: *导入：多行与绝对/相对*"

#: ../../library/__future__.rst:81

msgid "with_statement"

msgstr "with_statement"

#: ../../library/__future__.rst:81

msgid "2.6"

msgstr "2.6"

#: ../../library/__future__.rst:81

msgid ":pep:`343`: *The \"with\" Statement*"

msgstr ":pep:`343`: * \"with\" 语句*"

#: ../../library/__future__.rst:84

msgid "print_function"

msgstr "print_function"

#: ../../library/__future__.rst:84 ../../library/__future__.rst:87

msgid "2.6.0a2"

msgstr "2.6.0a2"

#: ../../library/__future__.rst:84

msgid ":pep:`3105`: *Make print a function*"

msgstr ":pep:`3105`: *print 改为函数*"

#: ../../library/__future__.rst:87

msgid "unicode_literals"

msgstr "unicode_literals"

#: ../../library/__future__.rst:87

msgid ":pep:`3112`: *Bytes literals in Python 3000*"

msgstr ":pep:`3112`: *Python 3000 中的字节字面值*"

#: ../../library/__future__.rst:90

msgid "generator_stop"

msgstr "generator_stop"

#: ../../library/__future__.rst:90

msgid "3.5.0b1"

msgstr "3.5.0b1"

#: ../../library/__future__.rst:90

msgid "3.7"

msgstr "3.7"

#: ../../library/__future__.rst:90

msgid ":pep:`479`: *StopIteration handling inside generators*"

msgstr ":pep:`479`: *在生成器中处理 StopIteration*"

#: ../../library/__future__.rst:93

msgid "annotations"

msgstr "annotations"

#: ../../library/__future__.rst:93

msgid "3.7.0b1"

msgstr "3.7.0b1"

#: ../../library/__future__.rst:93

msgid "TBD [1]_"

msgstr "TBD [1]_"

#: ../../library/__future__.rst:93

msgid ":pep:`563`: *Postponed evaluation of annotations*"

msgstr ":pep:`563`: *Postponed evaluation of annotations*"

#: ../../library/__future__.rst:100

msgid ""

"``from __future__ import annotations`` was previously scheduled to become "

"mandatory in Python 3.10, but the Python Steering Council twice decided to "

"delay the change (`announcement for Python 3.10 "

"<https://mail.python.org/archives/list/python-"

"dev@python.org/message/CLVXXPQ2T2LQ5MP2Y53VVQFCXYWQJHKZ/>`__; `announcement "

"for Python 3.11 <https://mail.python.org/archives/list/python-"

"dev@python.org/message/VIZEBX5EYMSYIJNDBF6DMUMZOCWHARSO/>`__). No final "

"decision has been made yet. See also :pep:`563` and :pep:`649`."

msgstr ""

"先前计划在 Python 3.10 中强制使用 ``from __future__ import annotations`` "

"，但Python指导委员会两次决定推迟这一改变（ `Python 3.10 的公告 "

"<https://mail.python.org/archives/list/python-"

"dev@python.org/message/CLVXXPQ2T2LQ5MP2Y53VVQFCXYWQJHKZ/>`__ ； `Python 3.11 "

"的公告 <https://mail.python.org/archives/list/python-"

"dev@python.org/message/VIZEBX5EYMSYIJNDBF6DMUMZOCWHARSO/>`__ "

"）。目前还没有做出最终决定。参见 :pep:`563` 和 :pep:`649` 。"

#: ../../library/__future__.rst:110

msgid ":ref:`future`"

msgstr ":ref:`future`"

#: ../../library/__future__.rst:111

msgid "How the compiler treats future imports."

msgstr "编译器怎样处理 future import。"