# Copyright (C) 2001 Python Software Foundation

# This file is distributed under the same license as the Python package.

#

# Translators:

# Adrian Liaw <[email protected]>, 2018

# Matt Wang <[email protected]>, 2022

msgid ""

msgstr ""

"Project-Id-Version: Python 3.14\n"

"Report-Msgid-Bugs-To: \n"

"POT-Creation-Date: 2025-02-27 00:15+0000\n"

"PO-Revision-Date: 2022-11-16 03:29+0800\n"

"Last-Translator: Matt 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"

"X-Generator: Poedit 3.2\n"

#: ../../library/abc.rst:2

msgid ":mod:`!abc` --- Abstract Base Classes"

msgstr ":mod:`!abc` --- 抽象基底類別"

#: ../../library/abc.rst:11

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

msgstr "**原始碼：**\\ :source:`Lib/abc.py`"

#: ../../library/abc.rst:15

msgid ""

"This module provides the infrastructure for defining :term:`abstract base "

"classes <abstract base class>` (ABCs) in Python, as outlined in :pep:`3119`; "

"see the PEP for why this was added to Python. (See also :pep:`3141` and "

"the :mod:`numbers` module regarding a type hierarchy for numbers based on "

"ABCs.)"

msgstr ""

"如同在 :pep:`3119` 中所述，該模組提供了在 Python 中定義\\ :term:`抽象基底類"

"別 <abstract base class>` (ABC) 的基礎元件；若想瞭解為什麼需要在 Python 中增"

"加這個模組，請見 PEP 文件。（也請見 :pep:`3141` 以及 :mod:`numbers` 模組以瞭"

"解基於 ABC 的數字型別階層關係。）"

#: ../../library/abc.rst:20

msgid ""

"The :mod:`collections` module has some concrete classes that derive from "

"ABCs; these can, of course, be further derived. In addition, "

"the :mod:`collections.abc` submodule has some ABCs that can be used to test "

"whether a class or instance provides a particular interface, for example, if "

"it is :term:`hashable` or if it is a :term:`mapping`."

msgstr ""

":mod:`collections` 模組中有一些衍生自 ABC 的具體類別；當然這些類別還可以進一"

"步衍生出其他類別。此外，:mod:`collections.abc` 子模組中有一些 ABC 可被用於測"

"試一個類別或實例是否提供特定介面，例如它是否\\ :term:`可雜湊 (hashable) "

"<hashable>` 或它是否為\\ :term:`對映 <mapping>`。"

#: ../../library/abc.rst:27

msgid ""

"This module provides the metaclass :class:`ABCMeta` for defining ABCs and a "

"helper class :class:`ABC` to alternatively define ABCs through inheritance:"

msgstr ""

"該模組提供了一個用來定義 ABC 的元類別 (metaclass) :class:`ABCMeta` 和另一個以"

"繼承的方式定義 ABC 的工具類別 :class:`ABC`："

#: ../../library/abc.rst:32

msgid ""

"A helper class that has :class:`ABCMeta` as its metaclass. With this class, "

"an abstract base class can be created by simply deriving from :class:`!ABC` "

"avoiding sometimes confusing metaclass usage, for example::"

msgstr ""

"一個使用 :class:`ABCMeta` 作為元類別的工具類別。抽象基底類別可以透過"

"自 :class:`!ABC` 衍生而建立，這就避免了在某些情況下會令人混淆的元類別用法，用"

"法如以下範例： ::"

#: ../../library/abc.rst:36

msgid ""

"from abc import ABC\n"

"\n"

"class MyABC(ABC):\n"

" pass"

msgstr ""

"from abc import ABC\n"

"\n"

"class MyABC(ABC):\n"

" pass"

#: ../../library/abc.rst:41

msgid ""

"Note that the type of :class:`!ABC` is still :class:`ABCMeta`, therefore "

"inheriting from :class:`!ABC` requires the usual precautions regarding "

"metaclass usage, as multiple inheritance may lead to metaclass conflicts. "

"One may also define an abstract base class by passing the metaclass keyword "

"and using :class:`!ABCMeta` directly, for example::"

msgstr ""

"注意 :class:`!ABC` 的型別仍然是 :class:`ABCMeta`，因此繼承 :class:`!ABC` 仍然"

"需要關注使用元類別的注意事項，如多重繼承可能會導致元類別衝突。當然你也可以傳"

"入元類別關鍵字並直接使用 :class:`!ABCMeta` 來定義一個抽象基底類別，例如： ::"

#: ../../library/abc.rst:47

msgid ""

"from abc import ABCMeta\n"

"\n"

"class MyABC(metaclass=ABCMeta):\n"

" pass"

msgstr ""

"from abc import ABCMeta\n"

"\n"

"class MyABC(metaclass=ABCMeta):\n"

" pass"

#: ../../library/abc.rst:57

msgid "Metaclass for defining Abstract Base Classes (ABCs)."

msgstr "用於定義抽象基底類別（ABC）的元類別。"

#: ../../library/abc.rst:59

msgid ""

"Use this metaclass to create an ABC. An ABC can be subclassed directly, and "

"then acts as a mix-in class. You can also register unrelated concrete "

"classes (even built-in classes) and unrelated ABCs as \"virtual subclasses\" "

"-- these and their descendants will be considered subclasses of the "

"registering ABC by the built-in :func:`issubclass` function, but the "

"registering ABC won't show up in their MRO (Method Resolution Order) nor "

"will method implementations defined by the registering ABC be callable (not "

"even via :func:`super`). [#]_"

msgstr ""

"使用該元類別以建立一個 ABC。一個 ABC 可以像 mix-in 類別一樣直接被子類別繼承。"

"你也可以將不相關的具體類別（甚至是內建類別）和 ABC 註冊為「虛擬子類別 "

"(virtual subclass)」 —— 這些類別以及它們的子類別會被內建函"

"式 :func:`issubclass` 識別為已註冊 ABC 的子類別，但是該 ABC 不會出現在其 MRO"

"（Method Resolution Order，方法解析順序）中，由該 ABC 所定義的方法實作也不可"

"呼叫（即使透過 :func:`super` 呼叫也不行）。[#]_"

#: ../../library/abc.rst:68

msgid ""

"Classes created with a metaclass of :class:`!ABCMeta` have the following "

"method:"

msgstr "使用 :class:`!ABCMeta` 作為元類別建立的類別含有以下的方法："

#: ../../library/abc.rst:72

msgid ""

"Register *subclass* as a \"virtual subclass\" of this ABC. For example::"

msgstr "將\\ *子類別*\\ 註冊為該 ABC 的「抽象子類別」，例如： ::"

#: ../../library/abc.rst:75

msgid ""

"from abc import ABC\n"

"\n"

"class MyABC(ABC):\n"

" pass\n"

"\n"

"MyABC.register(tuple)\n"

"\n"

"assert issubclass(tuple, MyABC)\n"

"assert isinstance((), MyABC)"

msgstr ""

"from abc import ABC\n"

"\n"

"class MyABC(ABC):\n"

" pass\n"

"\n"

"MyABC.register(tuple)\n"

"\n"

"assert issubclass(tuple, MyABC)\n"

"assert isinstance((), MyABC)"

#: ../../library/abc.rst:85

msgid "Returns the registered subclass, to allow usage as a class decorator."

msgstr "回傳已註冊的子類別，使其能夠作為類別裝飾器。"

#: ../../library/abc.rst:88

msgid ""

"To detect calls to :meth:`!register`, you can use "

"the :func:`get_cache_token` function."

msgstr ""

"你可以使用 :func:`get_cache_token` 函式來檢測對 :meth:`!register` 的呼叫。"

#: ../../library/abc.rst:92

msgid "You can also override this method in an abstract base class:"

msgstr "你也可以覆寫 (override) 虛擬基底類別中的這個方法："

#: ../../library/abc.rst:96

msgid "(Must be defined as a class method.)"

msgstr "（必須定義為類別方法。）"

#: ../../library/abc.rst:98

msgid ""

"Check whether *subclass* is considered a subclass of this ABC. This means "

"that you can customize the behavior of :func:`issubclass` further without "

"the need to call :meth:`register` on every class you want to consider a "

"subclass of the ABC. (This class method is called from "

"the :meth:`~type.__subclasscheck__` method of the ABC.)"

msgstr ""

"檢查 *subclass* 是否該被認為是該 ABC 的子類別，也就是說你可以直接自"

"訂 :func:`issubclass` 的行為，而不用對於那些你希望定義為該 ABC 的子類別的類別"

"都個別呼叫 :meth:`register` 方法。（這個類別方法是在 ABC "

"的 :meth:`~type.__subclasscheck__` 方法中呼叫。）"

#: ../../library/abc.rst:104

msgid ""

"This method should return ``True``, ``False`` or :data:`NotImplemented`. If "

"it returns ``True``, the *subclass* is considered a subclass of this ABC. If "

"it returns ``False``, the *subclass* is not considered a subclass of this "

"ABC, even if it would normally be one. If it returns :data:`!"

"NotImplemented`, the subclass check is continued with the usual mechanism."

msgstr ""

"此方法必須回傳 ``True``、``False`` 或是 :data:`NotImplemented`。如果回傳 "

"``True``，*subclass* 就會被認為是這個 ABC 的子類別。如果回傳 ``False``，"

"*subclass* 就會被判定並非該 ABC 的子類別，即便正常情況應如此。如果回"

"傳 :data:`!NotImplemented`，子類別檢查會按照正常機制繼續執行。"

#: ../../library/abc.rst:114

msgid ""

"For a demonstration of these concepts, look at this example ABC definition::"

msgstr "為了對這些概念做一演示，請見以下定義 ABC 的範例： ::"

#: ../../library/abc.rst:116

msgid ""

"class Foo:\n"

" def __getitem__(self, index):\n"

" ...\n"

" def __len__(self):\n"

" ...\n"

" def get_iterator(self):\n"

" return iter(self)\n"

"\n"

"class MyIterable(ABC):\n"

"\n"

" @abstractmethod\n"

" def __iter__(self):\n"

" while False:\n"

" yield None\n"

"\n"

" def get_iterator(self):\n"

" return self.__iter__()\n"

"\n"

" @classmethod\n"

" def __subclasshook__(cls, C):\n"

" if cls is MyIterable:\n"

" if any(\"__iter__\" in B.__dict__ for B in C.__mro__):\n"

" return True\n"

" return NotImplemented\n"

"\n"

"MyIterable.register(Foo)"

msgstr ""

"class Foo:\n"

" def __getitem__(self, index):\n"

" ...\n"

" def __len__(self):\n"

" ...\n"

" def get_iterator(self):\n"

" return iter(self)\n"

"\n"

"class MyIterable(ABC):\n"

"\n"

" @abstractmethod\n"

" def __iter__(self):\n"

" while False:\n"

" yield None\n"

"\n"

" def get_iterator(self):\n"

" return self.__iter__()\n"

"\n"

" @classmethod\n"

" def __subclasshook__(cls, C):\n"

" if cls is MyIterable:\n"

" if any(\"__iter__\" in B.__dict__ for B in C.__mro__):\n"

" return True\n"

" return NotImplemented\n"

"\n"

"MyIterable.register(Foo)"

#: ../../library/abc.rst:143

msgid ""

"The ABC ``MyIterable`` defines the standard iterable "

"method, :meth:`~object.__iter__`, as an abstract method. The implementation "

"given here can still be called from subclasses. The :meth:`!get_iterator` "

"method is also part of the ``MyIterable`` abstract base class, but it does "

"not have to be overridden in non-abstract derived classes."

msgstr ""

"ABC ``MyIterable`` 定義了作為抽象方法的一個標準疊代方"

"法 :meth:`~object.__iter__`。這裡給定的實作仍可在子類別中被呼叫。:meth:`!"

"get_iterator` 方法也是 ``MyIterable`` 抽象基底類別的一部分，但它不必被非抽象"

"衍生類別覆寫。"

#: ../../library/abc.rst:149

msgid ""

"The :meth:`__subclasshook__` class method defined here says that any class "

"that has an :meth:`~object.__iter__` method in its :attr:`~object.__dict__` "

"(or in that of one of its base classes, accessed via "

"the :attr:`~type.__mro__` list) is considered a ``MyIterable`` too."

msgstr ""

"這裡定義的 :meth:`__subclasshook__` 類別方法說明任何在"

"其 :attr:`~object.__dict__` (或在其透過 :attr:`~type.__mro__` 列表存取的基底"

"類別) 中具有 :meth:`~object.__iter__` 方法的類別也都會被視為 ``MyIterable``。"

#: ../../library/abc.rst:154

msgid ""

"Finally, the last line makes ``Foo`` a virtual subclass of ``MyIterable``, "

"even though it does not define an :meth:`~object.__iter__` method (it uses "

"the old-style iterable protocol, defined in terms of :meth:`~object.__len__` "

"and :meth:`~object.__getitem__`). Note that this will not make "

"``get_iterator`` available as a method of ``Foo``, so it is provided "

"separately."

msgstr ""

"最後，即使 ``Foo`` 沒有定義 :meth:`~object.__iter__` 方法（它使用了"

"以 :meth:`~object.__len__` 和 :meth:`~object.__getitem__` 所定義的舊式可疊代"

"物件協定），最末一行使其成為 ``MyIterable`` 的一個虛擬子類別。請注意這不會使 "

"``get_iterator`` 成為 ``Foo`` 的一個可用方法，所以它是需要被另外提供的。"

#: ../../library/abc.rst:163

msgid "The :mod:`!abc` module also provides the following decorator:"

msgstr ":mod:`!abc` 模組也提供了這些裝飾器："

#: ../../library/abc.rst:167

msgid "A decorator indicating abstract methods."

msgstr "用於表示抽象方法的裝飾器。"

#: ../../library/abc.rst:169

msgid ""

"Using this decorator requires that the class's metaclass is :class:`ABCMeta` "

"or is derived from it. A class that has a metaclass derived from :class:`!"

"ABCMeta` cannot be instantiated unless all of its abstract methods and "

"properties are overridden. The abstract methods can be called using any of "

"the normal 'super' call mechanisms. :func:`!abstractmethod` may be used to "

"declare abstract methods for properties and descriptors."

msgstr ""

"類別的元類別是 :class:`ABCMeta` 或是從該類別衍生才能使用此裝飾器。一個具有衍"

"生自 :class:`!ABCMeta` 之元類別的類別不可以被實例化，除非它全部的抽象方法和特"

"性均已被覆寫。抽象方法可透過任何一般的 'super' 呼叫機制來呼叫。:func:`!"

"abstractmethod` 可被用於為特性和描述器宣告的抽象方法。"

#: ../../library/abc.rst:176

msgid ""

"Dynamically adding abstract methods to a class, or attempting to modify the "

"abstraction status of a method or class once it is created, are only "

"supported using the :func:`update_abstractmethods` function. The :func:`!"

"abstractmethod` only affects subclasses derived using regular inheritance; "

"\"virtual subclasses\" registered with the ABC's :meth:`~ABCMeta.register` "

"method are not affected."

msgstr ""

"僅在使用 :func:`update_abstractmethods` 函式時，才能夠動態地為一個類別新增抽"

"象方法，或者嘗試在方法或類別被建立後修改其抽象狀態。:func:`!abstractmethod` "

"只會影響使用常規繼承所衍生出的子類別；透過 ABC 的 :meth:`~ABCMeta.register` "

"方法註冊的「虛擬子類別」不會受到影響。"

#: ../../library/abc.rst:183

msgid ""

"When :func:`!abstractmethod` is applied in combination with other method "

"descriptors, it should be applied as the innermost decorator, as shown in "

"the following usage examples::"

msgstr ""

"當 :func:`!abstractmethod` 與其他方法描述器 (method descriptor) 配合應用時，"

"它應被當最內層的裝飾器，如以下用法範例所示： ::"

#: ../../library/abc.rst:187

msgid ""

"class C(ABC):\n"

" @abstractmethod\n"

" def my_abstract_method(self, arg1):\n"

" ...\n"

" @classmethod\n"

" @abstractmethod\n"

" def my_abstract_classmethod(cls, arg2):\n"

" ...\n"

" @staticmethod\n"

" @abstractmethod\n"

" def my_abstract_staticmethod(arg3):\n"

" ...\n"

"\n"

" @property\n"

" @abstractmethod\n"

" def my_abstract_property(self):\n"

" ...\n"

" @my_abstract_property.setter\n"

" @abstractmethod\n"

" def my_abstract_property(self, val):\n"

" ...\n"

"\n"

" @abstractmethod\n"

" def _get_x(self):\n"

" ...\n"

" @abstractmethod\n"

" def _set_x(self, val):\n"

" ...\n"

" x = property(_get_x, _set_x)"

msgstr ""

"class C(ABC):\n"

" @abstractmethod\n"

" def my_abstract_method(self, arg1):\n"

" ...\n"

" @classmethod\n"

" @abstractmethod\n"

" def my_abstract_classmethod(cls, arg2):\n"

" ...\n"

" @staticmethod\n"

" @abstractmethod\n"

" def my_abstract_staticmethod(arg3):\n"

" ...\n"

"\n"

" @property\n"

" @abstractmethod\n"

" def my_abstract_property(self):\n"

" ...\n"

" @my_abstract_property.setter\n"

" @abstractmethod\n"

" def my_abstract_property(self, val):\n"

" ...\n"

"\n"

" @abstractmethod\n"

" def _get_x(self):\n"

" ...\n"

" @abstractmethod\n"

" def _set_x(self, val):\n"

" ...\n"

" x = property(_get_x, _set_x)"

#: ../../library/abc.rst:217

msgid ""

"In order to correctly interoperate with the abstract base class machinery, "

"the descriptor must identify itself as abstract using :attr:`!"

"__isabstractmethod__`. In general, this attribute should be ``True`` if any "

"of the methods used to compose the descriptor are abstract. For example, "

"Python's built-in :class:`property` does the equivalent of::"

msgstr ""

"為了能正確地與 ABC 機制實作相互操作，描述器必須使用 :attr:`!"

"__isabstractmethod__` 將自身標識為抽象的。一般來說，如果被用於組成描述器的任"

"一方法是抽象的，則此屬性應當為 ``True``。 例如，Python 的內"

"建 :class:`property` 所做的就等價於： ::"

#: ../../library/abc.rst:223

msgid ""

"class Descriptor:\n"

" ...\n"

" @property\n"

" def __isabstractmethod__(self):\n"

" return any(getattr(f, '__isabstractmethod__', False) for\n"

" f in (self._fget, self._fset, self._fdel))"

msgstr ""

"class Descriptor:\n"

" ...\n"

" @property\n"

" def __isabstractmethod__(self):\n"

" return any(getattr(f, '__isabstractmethod__', False) for\n"

" f in (self._fget, self._fset, self._fdel))"

#: ../../library/abc.rst:232

msgid ""

"Unlike Java abstract methods, these abstract methods may have an "

"implementation. This implementation can be called via the :func:`super` "

"mechanism from the class that overrides it. This could be useful as an end-"

"point for a super-call in a framework that uses cooperative multiple-"

"inheritance."

msgstr ""

"不同於 Java 抽象方法，這些抽象方法可能具有一個實作。這個實作可在覆寫它的類別"

"上透過 :func:`super` 機制來呼叫。這在使用協作多重繼承 (cooperative multiple-"

"inheritance) 的框架中，可以被用作 super 呼叫的一個端點 (end-point)。"

#: ../../library/abc.rst:239

msgid "The :mod:`!abc` module also supports the following legacy decorators:"

msgstr ":mod:`!abc` 模組還支援下列舊式裝飾器："

#: ../../library/abc.rst:244

msgid ""

"It is now possible to use :class:`classmethod` with :func:`abstractmethod`, "

"making this decorator redundant."

msgstr ""

"現在可以讓 :class:`classmethod` 配合 :func:`abstractmethod` 使用，使得此裝飾"

"器變得冗餘。"

#: ../../library/abc.rst:248

msgid ""

"A subclass of the built-in :func:`classmethod`, indicating an abstract "

"classmethod. Otherwise it is similar to :func:`abstractmethod`."

msgstr ""

"內建 :func:`classmethod` 的子類別，表示為一個抽象類別方法。在其他方面它都類似"

"於 :func:`abstractmethod`。"

#: ../../library/abc.rst:251

msgid ""

"This special case is deprecated, as the :func:`classmethod` decorator is now "

"correctly identified as abstract when applied to an abstract method::"

msgstr ""

"這個特例已被棄用，因為現在當 :func:`classmethod` 裝飾器應用於抽象方法時已會被"

"正確地標識為是抽象的： ::"

#: ../../library/abc.rst:255

msgid ""

"class C(ABC):\n"

" @classmethod\n"

" @abstractmethod\n"

" def my_abstract_classmethod(cls, arg):\n"

" ..."

msgstr ""

"class C(ABC):\n"

" @classmethod\n"

" @abstractmethod\n"

" def my_abstract_classmethod(cls, arg):\n"

" ..."

#: ../../library/abc.rst:265

msgid ""

"It is now possible to use :class:`staticmethod` with :func:`abstractmethod`, "

"making this decorator redundant."

msgstr ""

"現在可以讓 :class:`staticmethod` 配合 :func:`abstractmethod` 使用，使得此裝飾"

"器變得冗餘。"

#: ../../library/abc.rst:269

msgid ""

"A subclass of the built-in :func:`staticmethod`, indicating an abstract "

"staticmethod. Otherwise it is similar to :func:`abstractmethod`."

msgstr ""

"內建 :func:`staticmethod` 的子類別，表示為一個抽象靜態方法。在其他方面它都類"

"似於 :func:`abstractmethod`。"

#: ../../library/abc.rst:272

msgid ""

"This special case is deprecated, as the :func:`staticmethod` decorator is "

"now correctly identified as abstract when applied to an abstract method::"

msgstr ""

"這個特例已被棄用，因為現在當 :func:`staticmethod` 裝飾器應用於抽象方法時已會"

"被正確地標識為是抽象的： ::"

#: ../../library/abc.rst:276

msgid ""

"class C(ABC):\n"

" @staticmethod\n"

" @abstractmethod\n"

" def my_abstract_staticmethod(arg):\n"

" ..."

msgstr ""

"class C(ABC):\n"

" @staticmethod\n"

" @abstractmethod\n"

" def my_abstract_staticmethod(arg):\n"

" ..."

#: ../../library/abc.rst:285

msgid ""

"It is now possible to "

"use :class:`property`, :meth:`property.getter`, :meth:`property.setter` "

"and :meth:`property.deleter` with :func:`abstractmethod`, making this "

"decorator redundant."

msgstr ""

"現在可以"

"讓 :class:`property`、:meth:`property.getter`、:meth:`property.setter` "

"和 :meth:`property.deleter` 配合 :func:`abstractmethod` 使用，使得此裝飾器變"

"得冗餘。"

#: ../../library/abc.rst:290

msgid ""

"A subclass of the built-in :func:`property`, indicating an abstract property."

msgstr "內建 :func:`property` 的子類別，表示為一個抽象特性。"

#: ../../library/abc.rst:293

msgid ""

"This special case is deprecated, as the :func:`property` decorator is now "

"correctly identified as abstract when applied to an abstract method::"

msgstr ""

"這個特例已被棄用，因為現在當 :func:`property` 裝飾器應用於抽象方法時已會被正"

"確地標識為是抽象的： ::"

#: ../../library/abc.rst:297

msgid ""

"class C(ABC):\n"

" @property\n"

" @abstractmethod\n"

" def my_abstract_property(self):\n"

" ..."

msgstr ""

"class C(ABC):\n"

" @property\n"

" @abstractmethod\n"

" def my_abstract_property(self):\n"

" ..."

#: ../../library/abc.rst:303

msgid ""

"The above example defines a read-only property; you can also define a read-"

"write abstract property by appropriately marking one or more of the "

"underlying methods as abstract::"

msgstr ""

"上面的例子定義了一個唯讀特性；你也可以透過適當地將一個或多個底層方法標記為抽"

"象的來定義可讀寫的抽象特性： ::"

#: ../../library/abc.rst:307

msgid ""

"class C(ABC):\n"

" @property\n"

" def x(self):\n"

" ...\n"

"\n"

" @x.setter\n"

" @abstractmethod\n"

" def x(self, val):\n"

" ..."

msgstr ""

"class C(ABC):\n"

" @property\n"

" def x(self):\n"

" ...\n"

"\n"

" @x.setter\n"

" @abstractmethod\n"

" def x(self, val):\n"

" ..."

#: ../../library/abc.rst:317

msgid ""

"If only some components are abstract, only those components need to be "

"updated to create a concrete property in a subclass::"

msgstr ""

"如果只有某些元件是抽象的，則只需更新那些元件即可在子類別中建立具體的特性： ::"

#: ../../library/abc.rst:320

msgid ""

"class D(C):\n"

" @C.x.setter\n"

" def x(self, val):\n"

" ..."

msgstr ""

"class D(C):\n"

" @C.x.setter\n"

" def x(self, val):\n"

" ..."

#: ../../library/abc.rst:326

msgid "The :mod:`!abc` module also provides the following functions:"

msgstr ":mod:`!abc` 模組也提供了這些函式："

#: ../../library/abc.rst:330

msgid "Returns the current abstract base class cache token."

msgstr "回傳目前 ABC 快取令牌 (cache token)。"

#: ../../library/abc.rst:332

msgid ""

"The token is an opaque object (that supports equality testing) identifying "

"the current version of the abstract base class cache for virtual subclasses. "

"The token changes with every call to :meth:`ABCMeta.register` on any ABC."

msgstr ""

"此令牌是一個（支援相等性測試的）不透明物件 (opaque object)，用於為虛擬子類別"

"標識抽象基底類別快取的目前版本。此令牌會在任何 ABC 上每次呼"

"叫 :meth:`ABCMeta.register` 時發生更改。"

#: ../../library/abc.rst:340

msgid ""

"A function to recalculate an abstract class's abstraction status. This "

"function should be called if a class's abstract methods have been "

"implemented or changed after it was created. Usually, this function should "

"be called from within a class decorator."

msgstr ""

"重新計算一個抽象類別之抽象狀態的函式。如果一個類別的抽象方法在建立後被實作或"

"被修改，則應當呼叫此函式。通常此函式應在一個類別裝飾器內部被呼叫。"

#: ../../library/abc.rst:345

msgid "Returns *cls*, to allow usage as a class decorator."

msgstr "回傳 *cls*，使其能夠用作為類別的裝飾器。"

#: ../../library/abc.rst:347

msgid "If *cls* is not an instance of :class:`ABCMeta`, does nothing."

msgstr "如果 *cls* 不是 :class:`ABCMeta` 的實例則不做任何操作。"

#: ../../library/abc.rst:351

msgid ""

"This function assumes that *cls*'s superclasses are already updated. It does "

"not update any subclasses."

msgstr ""

"此函式會假定 *cls* 的超類別 (superclass) 已經被更新。它不會更新任何子類別。"

#: ../../library/abc.rst:357

msgid "Footnotes"

msgstr "註腳"

#: ../../library/abc.rst:358

msgid ""

"C++ programmers should note that Python's virtual base class concept is not "

"the same as C++'s."

msgstr ""

"C++ 程式設計師需要注意到 Python 中虛擬基底類別的概念和 C++ 中的並不相同。"