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# SOME DESCRIPTIVE TITLE.
# Copyright (C) 2001-2024, Python Software Foundation
# This file is distributed under the same license as the Python package.
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
#
# Translators:
# Marco Rougeth <marco@rougeth.com>, 2020
# Claudio Rogerio Carvalho Filho <excriptbrasil@gmail.com>, 2020
# Leticia Portella <leportella@gmail.com>, 2020
# Vinícius Muniz de Melo <viniciusdesk@icloud.com>, 2020
# i17obot <i17obot@rougeth.com>, 2020
# Hildeberto Abreu Magalhães <hildeberto@gmail.com>, 2021
# Rafael Fontenelle <rffontenelle@gmail.com>, 2024
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: Python 3.8\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2024-08-23 17:20+0000\n"
"PO-Revision-Date: 2020-05-30 11:59+0000\n"
"Last-Translator: Rafael Fontenelle <rffontenelle@gmail.com>, 2024\n"
"Language-Team: Portuguese (Brazil) (https://app.transifex.com/python-doc/"
"teams/5390/pt_BR/)\n"
"Language: pt_BR\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Plural-Forms: nplurals=3; plural=(n == 0 || n == 1) ? 0 : n != 0 && n % "
"1000000 == 0 ? 1 : 2;\n"
#: ../../library/dataclasses.rst:2
msgid ":mod:`dataclasses` --- Data Classes"
msgstr ":mod:`dataclasses` --- Data Classes"
#: ../../library/dataclasses.rst:10
msgid "**Source code:** :source:`Lib/dataclasses.py`"
msgstr "**Código-fonte:** :source:`Lib/dataclasses.py`"
#: ../../library/dataclasses.rst:14
msgid ""
"This module provides a decorator and functions for automatically adding "
"generated :term:`special method`\\s such as :meth:`__init__` "
"and :meth:`__repr__` to user-defined classes. It was originally described "
"in :pep:`557`."
msgstr ""
"Este módulo fornece um decorador e funções para adicionar "
"automaticamente :term:`método especial`\\s tais como :meth:`__init__` "
"e :meth:`__repr__` a classes definidas pelo usuário. Foi originalmente "
"descrita em :pep:`557`."
#: ../../library/dataclasses.rst:19
msgid ""
"The member variables to use in these generated methods are defined "
"using :pep:`526` type annotations. For example this code::"
msgstr ""
"As variáveis de membro a serem usadas nesses métodos gerados são definidas "
"usando :pep:`526` anotações de tipo. Por exemplo, este código::"
#: ../../library/dataclasses.rst:34
msgid "Will add, among other things, a :meth:`__init__` that looks like::"
msgstr ""
"Vai adicionar, além de outras coisas, o :meth:`__init__` que parece com::"
#: ../../library/dataclasses.rst:41
msgid ""
"Note that this method is automatically added to the class: it is not "
"directly specified in the ``InventoryItem`` definition shown above."
msgstr ""
"Observe que este método é adicionado automaticamente à classe: ele não é "
"especificado diretamente na definição ``InventoryItem`` mostrada acima."
#: ../../library/dataclasses.rst:47
msgid "Module-level decorators, classes, and functions"
msgstr "Decoradores no nível do módulo, classes e funções."
#: ../../library/dataclasses.rst:51
msgid ""
"This function is a :term:`decorator` that is used to add "
"generated :term:`special method`\\s to classes, as described below."
msgstr ""
"Esta função é um :term:`decorador` que é usado para adicionar :term:`métodos "
"especiais <método especial>` para classes, conforme descrito abaixo."
#: ../../library/dataclasses.rst:54
msgid ""
"The :func:`dataclass` decorator examines the class to find ``field``\\s. A "
"``field`` is defined as class variable that has a :term:`type annotation "
"<variable annotation>`. With two exceptions described below, nothing "
"in :func:`dataclass` examines the type specified in the variable annotation."
msgstr ""
"O decorador :func:`dataclass` examina a classe para encontrar ``field``\\s. "
"Um ``field`` é definido como uma variável de classe que possui "
"uma :term:`anotação de tipo <variable annotation>`. Com duas exceções "
"descritas abaixo, nada em :func:`dataclass` examina o tipo especificado na "
"anotação de variável."
#: ../../library/dataclasses.rst:60
msgid ""
"The order of the fields in all of the generated methods is the order in "
"which they appear in the class definition."
msgstr ""
"A ordem dos campos em todos os métodos gerados é a ordem em que eles "
"aparecem na definição de classe."
#: ../../library/dataclasses.rst:63
msgid ""
"The :func:`dataclass` decorator will add various \"dunder\" methods to the "
"class, described below. If any of the added methods already exist on the "
"class, the behavior depends on the parameter, as documented below. The "
"decorator returns the same class that is called on; no new class is created."
msgstr ""
"O decorador :func:`dataclass` adicionará vários métodos \"dunder\" à classe, "
"descritos abaixo. Se algum dos métodos adicionados já existir na classe, o "
"comportamento dependerá do parâmetro, conforme documentado abaixo. O "
"decorador retorna a mesma classe que é chamado; nenhuma nova classe é criada."
#: ../../library/dataclasses.rst:69
msgid ""
"If :func:`dataclass` is used just as a simple decorator with no parameters, "
"it acts as if it has the default values documented in this signature. That "
"is, these three uses of :func:`dataclass` are equivalent::"
msgstr ""
"Se :func:`dataclass` for usado apenas como um simples decorador, sem "
"parâmetros, ele age como se tivesse os valores padrão documentados nessa "
"assinatura. Ou seja, esses três usos de :func:`dataclass` são equivalentes::"
#: ../../library/dataclasses.rst:86
msgid "The parameters to :func:`dataclass` are:"
msgstr "Os parâmetros do :func:`dataclass` são:"
#: ../../library/dataclasses.rst:88
msgid ""
"``init``: If true (the default), a :meth:`__init__` method will be generated."
msgstr ""
"``init``: Se verdadeiro (o padrão), o método :meth:`__init__` será gerado."
#: ../../library/dataclasses.rst:91
msgid ""
"If the class already defines :meth:`__init__`, this parameter is ignored."
msgstr ""
"Se a classe do usuário definir :meth:`__init__` esse parâmetro é ignorado."
#: ../../library/dataclasses.rst:94
msgid ""
"``repr``: If true (the default), a :meth:`__repr__` method will be "
"generated. The generated repr string will have the class name and the name "
"and repr of each field, in the order they are defined in the class. Fields "
"that are marked as being excluded from the repr are not included. For "
"example: ``InventoryItem(name='widget', unit_price=3.0, "
"quantity_on_hand=10)``."
msgstr ""
"``repr``: Se verdadeiro (o padrão), um método :meth:`__repr__` será gerado. "
"A sequência de string de representação gerada terá o nome da classe e o nome "
"e representação de cada campo, na ordem em que são definidos na classe. Os "
"campos marcados como excluídos da representação não são incluídos. Por "
"exemplo: ``InventoryItem(name='widget', unit_price=3.0, "
"quantity_on_hand=10)``."
#: ../../library/dataclasses.rst:101
msgid ""
"If the class already defines :meth:`__repr__`, this parameter is ignored."
msgstr ""
"Se a classe do usuário já define :meth:`__repr__` esse parâmetro é ignorado."
#: ../../library/dataclasses.rst:104
msgid ""
"``eq``: If true (the default), an :meth:`__eq__` method will be generated. "
"This method compares the class as if it were a tuple of its fields, in "
"order. Both instances in the comparison must be of the identical type."
msgstr ""
"``eq``: Se verdadeiro (o padrão), um método :meth:`__eq__` será gerado. Este "
"método compara a classe como se fosse uma tupla de campos, em ordem. Ambas "
"as instâncias na comparação devem ser de tipo idêntico."
#: ../../library/dataclasses.rst:109
msgid "If the class already defines :meth:`__eq__`, this parameter is ignored."
msgstr ""
"Se a classe do usuário já define :meth:`__eq__` esse parâmetro é ignorado."
#: ../../library/dataclasses.rst:112
msgid ""
"``order``: If true (the default is "
"``False``), :meth:`__lt__`, :meth:`__le__`, :meth:`__gt__`, "
"and :meth:`__ge__` methods will be generated. These compare the class as if "
"it were a tuple of its fields, in order. Both instances in the comparison "
"must be of the identical type. If ``order`` is true and ``eq`` is false, "
"a :exc:`ValueError` is raised."
msgstr ""
"``order``: Se verdadeiro (o padrão é ``False``), os "
"métodos :meth:`__lt__`, :meth:`__le__`, :meth:`__gt__`, e :meth:`__ge__` "
"serão gerados. Comparam a classe como se fosse uma tupla de campos, em "
"ordem. Ambas instâncias na comparação devem ser de tipo idêntico. Se "
"``order`` é verdadeiro e ``eq`` é falso, a exceção :exc:`ValueError` é "
"levantada."
#: ../../library/dataclasses.rst:119
msgid ""
"If the class already defines any "
"of :meth:`__lt__`, :meth:`__le__`, :meth:`__gt__`, or :meth:`__ge__`, "
"then :exc:`TypeError` is raised."
msgstr ""
"Se a classe do usuário já define algum "
"dentre :meth:`__lt__`, :meth:`__le__`, :meth:`__gt__` ou :meth:`__ge__`, "
"então :exc:`TypeError` é levantada."
#: ../../library/dataclasses.rst:123
msgid ""
"``unsafe_hash``: If ``False`` (the default), a :meth:`__hash__` method is "
"generated according to how ``eq`` and ``frozen`` are set."
msgstr ""
"``unsafe_hash``: Se ``False`` (o padrão), um método :meth:`__hash__` é "
"gerado, conforme ``eq`` e ``frozen`` estão configurados."
#: ../../library/dataclasses.rst:126
msgid ""
":meth:`__hash__` is used by built-in :meth:`hash()`, and when objects are "
"added to hashed collections such as dictionaries and sets. Having "
"a :meth:`__hash__` implies that instances of the class are immutable. "
"Mutability is a complicated property that depends on the programmer's "
"intent, the existence and behavior of :meth:`__eq__`, and the values of the "
"``eq`` and ``frozen`` flags in the :func:`dataclass` decorator."
msgstr ""
":meth:`__hash__` é usado para prover o método :meth:`hash()`, e quando "
"objetos são adicionados a coleções do tipo dicionário ou conjunto. Ter um "
"método :meth:`__hash__` implica que instâncias da classe serão imutáveis. "
"Mutabilidade é uma propriedade complicada, que depende da intenção do "
"programador, da existência e comportamento do método :meth:`__eq__`, e dos "
"valores dos parâmetros ``eq`` e ``frozen`` no decorador :func:`dataclass` ."
#: ../../library/dataclasses.rst:133
msgid ""
"By default, :func:`dataclass` will not implicitly add a :meth:`__hash__` "
"method unless it is safe to do so. Neither will it add or change an "
"existing explicitly defined :meth:`__hash__` method. Setting the class "
"attribute ``__hash__ = None`` has a specific meaning to Python, as described "
"in the :meth:`__hash__` documentation."
msgstr ""
"Por padrão, :func:`dataclass` não vai adicionar implicitamente um "
"método :meth:`__hash__` , a menos que seja seguro fazê-lo. Nem irá "
"adicionar ou modificar um método :meth:`__hash__` existente, definido "
"explicitamente. Configurar o atributo de classe ``__hash__ = None`` tem um "
"significado específico para o Python, conforme descrito na documentação "
"do :meth:`__hash__` ."
#: ../../library/dataclasses.rst:139
msgid ""
"If :meth:`__hash__` is not explicitly defined, or if it is set to ``None``, "
"then :func:`dataclass` *may* add an implicit :meth:`__hash__` method. "
"Although not recommended, you can force :func:`dataclass` to create "
"a :meth:`__hash__` method with ``unsafe_hash=True``. This might be the case "
"if your class is logically immutable but can nonetheless be mutated. This is "
"a specialized use case and should be considered carefully."
msgstr ""
"Se :meth:`__hash__` não é definido explicitamente, ou se é configurado como "
"``None``, então :func:`dataclass` *pode* adicionar um "
"método :meth:`__hash__` implícito. Mesmo que não seja recomendado, pode-se "
"forçar :func:`dataclass` a criar um método :meth:`__hash__` com "
"``unsafe_hash=True``. Este pode ser o caso se sua classe é logicamente "
"imutável, mas na prática pode ser mudada. Esse é um caso de uso específico e "
"deve ser considerado com muito cuidade."
#: ../../library/dataclasses.rst:146
msgid ""
"Here are the rules governing implicit creation of a :meth:`__hash__` "
"method. Note that you cannot both have an explicit :meth:`__hash__` method "
"in your dataclass and set ``unsafe_hash=True``; this will result in "
"a :exc:`TypeError`."
msgstr ""
"Essas são as regras governando a criação implícita de um "
"método :meth:`__hash__` . Observe que não pode ter um "
"método :meth:`__hash__` explícito na dataclass e configurar "
"``unsafe_hash=True``; isso resultará em um :exc:`TypeError`."
#: ../../library/dataclasses.rst:151
msgid ""
"If ``eq`` and ``frozen`` are both true, by default :func:`dataclass` will "
"generate a :meth:`__hash__` method for you. If ``eq`` is true and "
"``frozen`` is false, :meth:`__hash__` will be set to ``None``, marking it "
"unhashable (which it is, since it is mutable). If ``eq`` is "
"false, :meth:`__hash__` will be left untouched meaning the :meth:`__hash__` "
"method of the superclass will be used (if the superclass is :class:`object`, "
"this means it will fall back to id-based hashing)."
msgstr ""
"Se ``eq`` e ``frozen`` são ambos verdadeiros, por padrão :func:`dataclass` "
"vai gerar um método :meth:`__hash__`. Se ``eq`` é verdadeiro e ``frozen`` é "
"falso, :meth:`__hash__` será configurado para ``None``, marcando a classe "
"como não hasheável (já que é mutável). Se ``eq`` é falso, :meth:`__hash__` "
"será deixado intocado, o que significa que o método :meth:`__hash__` da "
"superclasse será usado (se a superclasse é :class:`object`, significa que "
"voltará para o hash baseado em id)."
#: ../../library/dataclasses.rst:159
msgid ""
"``frozen``: If true (the default is ``False``), assigning to fields will "
"generate an exception. This emulates read-only frozen instances. "
"If :meth:`__setattr__` or :meth:`__delattr__` is defined in the class, "
"then :exc:`TypeError` is raised. See the discussion below."
msgstr ""
"``frozen``: Se verdadeiro (o padrão é ``False``), atribuições para os campos "
"vão gerar uma exceção. Imita instâncias congeladas, somente leitura. "
"Se :meth:`__setattr__` ou :meth:`__delattr__` é definido na classe, a "
"exceção :exc:`TypeError` é levantada. Veja a discussão abaixo."
#: ../../library/dataclasses.rst:164
msgid ""
"``field``\\s may optionally specify a default value, using normal Python "
"syntax::"
msgstr ""
"``field``\\s pode opcionalmente especificar um valor padrão, usando sintaxe "
"Python normal::"
#: ../../library/dataclasses.rst:172
msgid ""
"In this example, both ``a`` and ``b`` will be included in the "
"added :meth:`__init__` method, which will be defined as::"
msgstr ""
"Nesse exemplo, ``a`` e ``b`` serão incluídos no método :meth:`__init__` "
"adicionado, que será definido como::"
#: ../../library/dataclasses.rst:177
msgid ""
":exc:`TypeError` will be raised if a field without a default value follows a "
"field with a default value. This is true either when this occurs in a "
"single class, or as a result of class inheritance."
msgstr ""
#: ../../library/dataclasses.rst:183
msgid ""
"For common and simple use cases, no other functionality is required. There "
"are, however, some dataclass features that require additional per-field "
"information. To satisfy this need for additional information, you can "
"replace the default field value with a call to the provided :func:`field` "
"function. For example::"
msgstr ""
"Para casos de uso comuns e simples, nenhuma outra funcionalidade é "
"necessária. Existem, no entanto, alguns recursos que requerem informações "
"adicionais por campo. Para satisfazer essa necessidade de informações "
"adicionais, você pode substituir o valor do campo padrão por uma chamada "
"para a função :func:`field` fornecida. Por exemplo::"
#: ../../library/dataclasses.rst:196
msgid ""
"As shown above, the ``MISSING`` value is a sentinel object used to detect if "
"the ``default`` and ``default_factory`` parameters are provided. This "
"sentinel is used because ``None`` is a valid value for ``default``. No code "
"should directly use the ``MISSING`` value."
msgstr ""
"Como mostrado acima, o valor ``MISSING`` é um objeto sentinela usado para "
"detectar se os parâmetros ``default`` e ``default_factory`` são fornecidos. "
"Este sentinela é usado porque ``None`` é um valor válido para ``default``. "
"Nenhum código deve usar diretamente o valor ``MISSING``."
#: ../../library/dataclasses.rst:202
msgid "The parameters to :func:`field` are:"
msgstr "Os parâmetros de :func:`field` são:"
#: ../../library/dataclasses.rst:204
msgid ""
"``default``: If provided, this will be the default value for this field. "
"This is needed because the :meth:`field` call itself replaces the normal "
"position of the default value."
msgstr ""
"``default``: Se fornecido, este será o valor padrão para este campo. Isso é "
"necessário porque a própria chamada :meth:`field` substitui a posição normal "
"do valor padrão."
#: ../../library/dataclasses.rst:208
msgid ""
"``default_factory``: If provided, it must be a zero-argument callable that "
"will be called when a default value is needed for this field. Among other "
"purposes, this can be used to specify fields with mutable default values, as "
"discussed below. It is an error to specify both ``default`` and "
"``default_factory``."
msgstr ""
"``default_factory``: Se fornecido, deve ser um chamável sem argumento que "
"será chamado quando um valor padrão for necessário para este campo. Entre "
"outras finalidades, isso pode ser usado para especificar campos com valores "
"padrão mutáveis, conforme discutido abaixo. É um erro especificar ambos "
"``default`` e ``default_factory``."
#: ../../library/dataclasses.rst:214
msgid ""
"``init``: If true (the default), this field is included as a parameter to "
"the generated :meth:`__init__` method."
msgstr ""
#: ../../library/dataclasses.rst:217
msgid ""
"``repr``: If true (the default), this field is included in the string "
"returned by the generated :meth:`__repr__` method."
msgstr ""
#: ../../library/dataclasses.rst:220
msgid ""
"``compare``: If true (the default), this field is included in the generated "
"equality and comparison methods (:meth:`__eq__`, :meth:`__gt__`, et al.)."
msgstr ""
#: ../../library/dataclasses.rst:224
msgid ""
"``hash``: This can be a bool or ``None``. If true, this field is included "
"in the generated :meth:`__hash__` method. If ``None`` (the default), use "
"the value of ``compare``: this would normally be the expected behavior. A "
"field should be considered in the hash if it's used for comparisons. "
"Setting this value to anything other than ``None`` is discouraged."
msgstr ""
#: ../../library/dataclasses.rst:231
msgid ""
"One possible reason to set ``hash=False`` but ``compare=True`` would be if a "
"field is expensive to compute a hash value for, that field is needed for "
"equality testing, and there are other fields that contribute to the type's "
"hash value. Even if a field is excluded from the hash, it will still be "
"used for comparisons."
msgstr ""
"Uma possível razão para definir ``hash=False`` mas ``compare=True`` seria se "
"um campo for caro para calcular um valor de hash, esse campo for necessário "
"para teste de igualdade e houver outros campos que contribuem para o valor "
"de hash do tipo. Mesmo que um campo seja excluído do hash, ele ainda será "
"usado para comparações."
#: ../../library/dataclasses.rst:237
msgid ""
"``metadata``: This can be a mapping or None. None is treated as an empty "
"dict. This value is wrapped in :func:`~types.MappingProxyType` to make it "
"read-only, and exposed on the :class:`Field` object. It is not used at all "
"by Data Classes, and is provided as a third-party extension mechanism. "
"Multiple third-parties can each have their own key, to use as a namespace in "
"the metadata."
msgstr ""
"``metadata``: Pode ser um mapeamento ou None. None é tratado como um "
"dicionário vazio. Este valor é agrupado em :func:`~types.MappingProxyType` "
"para torná-lo somente leitura e exposto no objeto :class:`Field`. Ele não é "
"usado por Data Classes e é fornecido como um mecanismo de extensão de "
"terceiros. Vários terceiros podem ter sua própria chave, para usar como um "
"espaço de nomes nos metadados."
#: ../../library/dataclasses.rst:245
msgid ""
"If the default value of a field is specified by a call to :func:`field()`, "
"then the class attribute for this field will be replaced by the specified "
"``default`` value. If no ``default`` is provided, then the class attribute "
"will be deleted. The intent is that after the :func:`dataclass` decorator "
"runs, the class attributes will all contain the default values for the "
"fields, just as if the default value itself were specified. For example, "
"after::"
msgstr ""
"Se o valor padrão de um campo for especificado por uma chamada "
"para :func:`field()`, então o atributo de classe para este campo será "
"substituído pelo valor de ``default`` especificado. Se ``default`` não for "
"fornecido, o atributo de classe será excluído. A intenção é que, após a "
"execução do decorador :func:`dataclass`, todos os atributos de classe "
"conterão os valores padrão para os campos, como se o próprio valor padrão "
"fosse especificado. Por exemplo, depois de::"
#: ../../library/dataclasses.rst:261
msgid ""
"The class attribute ``C.z`` will be ``10``, the class attribute ``C.t`` will "
"be ``20``, and the class attributes ``C.x`` and ``C.y`` will not be set."
msgstr ""
"O atributo de classe ``C.z`` será ``10``, o atributo de classe ``C.t`` será "
"``20`` e os atributos de classe ``C.x`` e ``C.y`` não serão definidos."
#: ../../library/dataclasses.rst:267
msgid ""
":class:`Field` objects describe each defined field. These objects are "
"created internally, and are returned by the :func:`fields` module-level "
"method (see below). Users should never instantiate a :class:`Field` object "
"directly. Its documented attributes are:"
msgstr ""
"Objetos :class:`Field` descrevem cada campo definido. Esses objetos são "
"criados internamente e são retornados pelo método de nível de "
"módulo :func:`fields` (veja abaixo). Os usuários nunca devem instanciar um "
"objeto :class:`Field` diretamente. Seus atributos documentados são:"
#: ../../library/dataclasses.rst:272
msgid "``name``: The name of the field."
msgstr "``name``: O nome do campo."
#: ../../library/dataclasses.rst:274
msgid "``type``: The type of the field."
msgstr "``type``: O tipo do campo."
#: ../../library/dataclasses.rst:276
msgid ""
"``default``, ``default_factory``, ``init``, ``repr``, ``hash``, ``compare``, "
"and ``metadata`` have the identical meaning and values as they do in "
"the :func:`field` declaration."
msgstr ""
#: ../../library/dataclasses.rst:280
msgid ""
"Other attributes may exist, but they are private and must not be inspected "
"or relied on."
msgstr ""
"Outros atributos podem existir, mas são privados e não devem ser "
"inspecionados ou confiáveis."
#: ../../library/dataclasses.rst:285
msgid ""
"Returns a tuple of :class:`Field` objects that define the fields for this "
"dataclass. Accepts either a dataclass, or an instance of a dataclass. "
"Raises :exc:`TypeError` if not passed a dataclass or instance of one. Does "
"not return pseudo-fields which are ``ClassVar`` or ``InitVar``."
msgstr ""
"Retorna uma tupla de objetos :class:`Field` que definem os campos para esta "
"classe de dados. Aceita uma classe de dados ou uma instância de uma classe "
"de dados. Levanta :exc:`TypeError` se não for passada uma classe de dados ou "
"instância de uma. Não retorna pseudocampos que são ``ClassVar`` ou "
"``InitVar``."
#: ../../library/dataclasses.rst:292
msgid ""
"Converts the dataclass ``instance`` to a dict (by using the factory function "
"``dict_factory``). Each dataclass is converted to a dict of its fields, as "
"``name: value`` pairs. dataclasses, dicts, lists, and tuples are recursed "
"into. For example::"
msgstr ""
#: ../../library/dataclasses.rst:312 ../../library/dataclasses.rst:326
msgid "Raises :exc:`TypeError` if ``instance`` is not a dataclass instance."
msgstr ""
#: ../../library/dataclasses.rst:316
msgid ""
"Converts the dataclass ``instance`` to a tuple (by using the factory "
"function ``tuple_factory``). Each dataclass is converted to a tuple of its "
"field values. dataclasses, dicts, lists, and tuples are recursed into."
msgstr ""
#: ../../library/dataclasses.rst:321
msgid "Continuing from the previous example::"
msgstr "Continuando a partir do exemplo anterior::"
#: ../../library/dataclasses.rst:330
msgid ""
"Creates a new dataclass with name ``cls_name``, fields as defined in "
"``fields``, base classes as given in ``bases``, and initialized with a "
"namespace as given in ``namespace``. ``fields`` is an iterable whose "
"elements are each either ``name``, ``(name, type)``, or ``(name, type, "
"Field)``. If just ``name`` is supplied, ``typing.Any`` is used for "
"``type``. The values of ``init``, ``repr``, ``eq``, ``order``, "
"``unsafe_hash``, and ``frozen`` have the same meaning as they do "
"in :func:`dataclass`."
msgstr ""
#: ../../library/dataclasses.rst:339
msgid ""
"This function is not strictly required, because any Python mechanism for "
"creating a new class with ``__annotations__`` can then apply "
"the :func:`dataclass` function to convert that class to a dataclass. This "
"function is provided as a convenience. For example::"
msgstr ""
#: ../../library/dataclasses.rst:351
msgid "Is equivalent to::"
msgstr "É equivalente a::"
#: ../../library/dataclasses.rst:364
msgid ""
"Creates a new object of the same type of ``instance``, replacing fields with "
"values from ``changes``. If ``instance`` is not a Data Class, "
"raises :exc:`TypeError`. If values in ``changes`` do not specify fields, "
"raises :exc:`TypeError`."
msgstr ""
#: ../../library/dataclasses.rst:369
msgid ""
"The newly returned object is created by calling the :meth:`__init__` method "
"of the dataclass. This ensures that :meth:`__post_init__`, if present, is "
"also called."
msgstr ""
#: ../../library/dataclasses.rst:373
msgid ""
"Init-only variables without default values, if any exist, must be specified "
"on the call to :func:`replace` so that they can be passed "
"to :meth:`__init__` and :meth:`__post_init__`."
msgstr ""
#: ../../library/dataclasses.rst:377
msgid ""
"It is an error for ``changes`` to contain any fields that are defined as "
"having ``init=False``. A :exc:`ValueError` will be raised in this case."
msgstr ""
#: ../../library/dataclasses.rst:381
msgid ""
"Be forewarned about how ``init=False`` fields work during a call "
"to :func:`replace`. They are not copied from the source object, but rather "
"are initialized in :meth:`__post_init__`, if they're initialized at all. It "
"is expected that ``init=False`` fields will be rarely and judiciously used. "
"If they are used, it might be wise to have alternate class constructors, or "
"perhaps a custom ``replace()`` (or similarly named) method which handles "
"instance copying."
msgstr ""
#: ../../library/dataclasses.rst:392
msgid ""
"Return ``True`` if its parameter is a dataclass or an instance of one, "
"otherwise return ``False``."
msgstr ""
#: ../../library/dataclasses.rst:395
msgid ""
"If you need to know if a class is an instance of a dataclass (and not a "
"dataclass itself), then add a further check for ``not isinstance(obj, "
"type)``::"
msgstr ""
"Se você precisa saber se a classe é uma instância de dataclass (e não a "
"dataclass de fato), então adicione uma verificação para ``not "
"isinstance(obj, type)``::"
#: ../../library/dataclasses.rst:403
msgid "Post-init processing"
msgstr "Processamento pós-inicialização"
#: ../../library/dataclasses.rst:405
msgid ""
"The generated :meth:`__init__` code will call a method "
"named :meth:`__post_init__`, if :meth:`__post_init__` is defined on the "
"class. It will normally be called as ``self.__post_init__()``. However, if "
"any ``InitVar`` fields are defined, they will also be passed "
"to :meth:`__post_init__` in the order they were defined in the class. If "
"no :meth:`__init__` method is generated, then :meth:`__post_init__` will not "
"automatically be called."
msgstr ""
#: ../../library/dataclasses.rst:413
msgid ""
"Among other uses, this allows for initializing field values that depend on "
"one or more other fields. For example::"
msgstr ""
#: ../../library/dataclasses.rst:425
msgid ""
"See the section below on init-only variables for ways to pass parameters "
"to :meth:`__post_init__`. Also see the warning about how :func:`replace` "
"handles ``init=False`` fields."
msgstr ""
#: ../../library/dataclasses.rst:430
msgid "Class variables"
msgstr "Variáveis de classe"
#: ../../library/dataclasses.rst:432
msgid ""
"One of two places where :func:`dataclass` actually inspects the type of a "
"field is to determine if a field is a class variable as defined "
"in :pep:`526`. It does this by checking if the type of the field is "
"``typing.ClassVar``. If a field is a ``ClassVar``, it is excluded from "
"consideration as a field and is ignored by the dataclass mechanisms. Such "
"``ClassVar`` pseudo-fields are not returned by the module-"
"level :func:`fields` function."
msgstr ""
#: ../../library/dataclasses.rst:441
msgid "Init-only variables"
msgstr "Variáveis de inicialização apenas"
#: ../../library/dataclasses.rst:443
msgid ""
"The other place where :func:`dataclass` inspects a type annotation is to "
"determine if a field is an init-only variable. It does this by seeing if "
"the type of a field is of type ``dataclasses.InitVar``. If a field is an "
"``InitVar``, it is considered a pseudo-field called an init-only field. As "
"it is not a true field, it is not returned by the module-"
"level :func:`fields` function. Init-only fields are added as parameters to "
"the generated :meth:`__init__` method, and are passed to the "
"optional :meth:`__post_init__` method. They are not otherwise used by "
"dataclasses."
msgstr ""
#: ../../library/dataclasses.rst:453
msgid ""
"For example, suppose a field will be initialized from a database, if a value "
"is not provided when creating the class::"
msgstr ""
#: ../../library/dataclasses.rst:468
msgid ""
"In this case, :func:`fields` will return :class:`Field` objects for ``i`` "
"and ``j``, but not for ``database``."
msgstr ""
#: ../../library/dataclasses.rst:472
msgid "Frozen instances"
msgstr ""
#: ../../library/dataclasses.rst:474
msgid ""
"It is not possible to create truly immutable Python objects. However, by "
"passing ``frozen=True`` to the :meth:`dataclass` decorator you can emulate "
"immutability. In that case, dataclasses will add :meth:`__setattr__` "
"and :meth:`__delattr__` methods to the class. These methods will raise "
"a :exc:`FrozenInstanceError` when invoked."
msgstr ""
#: ../../library/dataclasses.rst:480
msgid ""
"There is a tiny performance penalty when using "
"``frozen=True``: :meth:`__init__` cannot use simple assignment to initialize "
"fields, and must use :meth:`object.__setattr__`."
msgstr ""
#: ../../library/dataclasses.rst:485
msgid "Inheritance"
msgstr "Herança"
#: ../../library/dataclasses.rst:487
msgid ""
"When the dataclass is being created by the :meth:`dataclass` decorator, it "
"looks through all of the class's base classes in reverse MRO (that is, "
"starting at :class:`object`) and, for each dataclass that it finds, adds the "
"fields from that base class to an ordered mapping of fields. After all of "
"the base class fields are added, it adds its own fields to the ordered "
"mapping. All of the generated methods will use this combined, calculated "
"ordered mapping of fields. Because the fields are in insertion order, "
"derived classes override base classes. An example::"
msgstr ""
#: ../../library/dataclasses.rst:507
msgid ""
"The final list of fields is, in order, ``x``, ``y``, ``z``. The final type "
"of ``x`` is ``int``, as specified in class ``C``."
msgstr ""
"A lista final de campos é, em ordem, ``x``, ``y``, ``z``. O tipo final de "
"``x`` é ``int``, conforme especificado na classe ``C``."
#: ../../library/dataclasses.rst:510
msgid "The generated :meth:`__init__` method for ``C`` will look like::"
msgstr "O método :meth:`__init__` gerado para ``C`` vai se parecer com::"
#: ../../library/dataclasses.rst:515
msgid "Default factory functions"
msgstr "Funções padrão de fábrica"
#: ../../library/dataclasses.rst:517
msgid ""
"If a :func:`field` specifies a ``default_factory``, it is called with zero "
"arguments when a default value for the field is needed. For example, to "
"create a new instance of a list, use::"
msgstr ""
#: ../../library/dataclasses.rst:523
msgid ""
"If a field is excluded from :meth:`__init__` (using ``init=False``) and the "
"field also specifies ``default_factory``, then the default factory function "
"will always be called from the generated :meth:`__init__` function. This "
"happens because there is no other way to give the field an initial value."
msgstr ""
#: ../../library/dataclasses.rst:530
msgid "Mutable default values"
msgstr "Valores padrão mutáveis"
#: ../../library/dataclasses.rst:532
msgid ""
"Python stores default member variable values in class attributes. Consider "
"this example, not using dataclasses::"
msgstr ""
#: ../../library/dataclasses.rst:547
msgid ""
"Note that the two instances of class ``C`` share the same class variable "
"``x``, as expected."
msgstr ""
#: ../../library/dataclasses.rst:550
msgid "Using dataclasses, *if* this code was valid::"
msgstr "Usando dataclasses, *se* este código fosse válido::"
#: ../../library/dataclasses.rst:558
msgid "it would generate code similar to::"
msgstr "Geraria código similar a::"
#: ../../library/dataclasses.rst:569
msgid ""
"This has the same issue as the original example using class ``C``. That is, "
"two instances of class ``D`` that do not specify a value for ``x`` when "
"creating a class instance will share the same copy of ``x``. Because "
"dataclasses just use normal Python class creation they also share this "
"behavior. There is no general way for Data Classes to detect this "
"condition. Instead, dataclasses will raise a :exc:`TypeError` if it detects "
"a default parameter of type ``list``, ``dict``, or ``set``. This is a "
"partial solution, but it does protect against many common errors."
msgstr ""
#: ../../library/dataclasses.rst:579
msgid ""
"Using default factory functions is a way to create new instances of mutable "
"types as default values for fields::"
msgstr ""
#: ../../library/dataclasses.rst:589
msgid "Exceptions"
msgstr "Exceções"
#: ../../library/dataclasses.rst:593
msgid ""
"Raised when an implicitly defined :meth:`__setattr__` or :meth:`__delattr__` "
"is called on a dataclass which was defined with ``frozen=True``. It is a "
"subclass of :exc:`AttributeError`."
msgstr ""