python-docs-fr/reference/import.po

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#: ../Doc/reference/import.rst:6
msgid "The import system"
msgstr ""

#: ../Doc/reference/import.rst:10
msgid ""
"Python code in one :term:`module` gains access to the code in another module "
"by the process of :term:`importing` it.  The :keyword:`import` statement is "
"the most common way of invoking the import machinery, but it is not the only "
"way.  Functions such as :func:`importlib.import_module` and built-in :func:"
"`__import__` can also be used to invoke the import machinery."
msgstr ""

#: ../Doc/reference/import.rst:16
msgid ""
"The :keyword:`import` statement combines two operations; it searches for the "
"named module, then it binds the results of that search to a name in the "
"local scope.  The search operation of the :keyword:`import` statement is "
"defined as a call to the :func:`__import__` function, with the appropriate "
"arguments. The return value of :func:`__import__` is used to perform the "
"name binding operation of the :keyword:`import` statement.  See the :keyword:"
"`import` statement for the exact details of that name binding operation."
msgstr ""

#: ../Doc/reference/import.rst:25
msgid ""
"A direct call to :func:`__import__` performs only the module search and, if "
"found, the module creation operation.  While certain side-effects may occur, "
"such as the importing of parent packages, and the updating of various caches "
"(including :data:`sys.modules`), only the :keyword:`import` statement "
"performs a name binding operation."
msgstr ""

#: ../Doc/reference/import.rst:31
msgid ""
"When calling :func:`__import__` as part of an import statement, the standard "
"builtin :func:`__import__` is called. Other mechanisms for invoking the "
"import system (such as :func:`importlib.import_module`) may choose to "
"subvert :func:`__import__` and use its own solution to implement import "
"semantics."
msgstr ""

#: ../Doc/reference/import.rst:37
msgid ""
"When a module is first imported, Python searches for the module and if "
"found, it creates a module object [#fnmo]_, initializing it.  If the named "
"module cannot be found, an :exc:`ModuleNotFoundError` is raised.  Python "
"implements various strategies to search for the named module when the import "
"machinery is invoked.  These strategies can be modified and extended by "
"using various hooks described in the sections below."
msgstr ""

#: ../Doc/reference/import.rst:44
msgid ""
"The import system has been updated to fully implement the second phase of :"
"pep:`302`. There is no longer any implicit import machinery - the full "
"import system is exposed through :data:`sys.meta_path`. In addition, native "
"namespace package support has been implemented (see :pep:`420`)."
msgstr ""

#: ../Doc/reference/import.rst:52
msgid ":mod:`importlib`"
msgstr ""

#: ../Doc/reference/import.rst:54
msgid ""
"The :mod:`importlib` module provides a rich API for interacting with the "
"import system.  For example :func:`importlib.import_module` provides a "
"recommended, simpler API than built-in :func:`__import__` for invoking the "
"import machinery.  Refer to the :mod:`importlib` library documentation for "
"additional detail."
msgstr ""

#: ../Doc/reference/import.rst:63
msgid "Packages"
msgstr "Les paquets"

#: ../Doc/reference/import.rst:68
msgid ""
"Python has only one type of module object, and all modules are of this type, "
"regardless of whether the module is implemented in Python, C, or something "
"else.  To help organize modules and provide a naming hierarchy, Python has a "
"concept of :term:`packages <package>`."
msgstr ""

#: ../Doc/reference/import.rst:73
msgid ""
"You can think of packages as the directories on a file system and modules as "
"files within directories, but don't take this analogy too literally since "
"packages and modules need not originate from the file system.  For the "
"purposes of this documentation, we'll use this convenient analogy of "
"directories and files.  Like file system directories, packages are organized "
"hierarchically, and packages may themselves contain subpackages, as well as "
"regular modules."
msgstr ""

#: ../Doc/reference/import.rst:81
msgid ""
"It's important to keep in mind that all packages are modules, but not all "
"modules are packages.  Or put another way, packages are just a special kind "
"of module.  Specifically, any module that contains a ``__path__`` attribute "
"is considered a package."
msgstr ""

#: ../Doc/reference/import.rst:86
msgid ""
"All modules have a name.  Subpackage names are separated from their parent "
"package name by dots, akin to Python's standard attribute access syntax.  "
"Thus you might have a module called :mod:`sys` and a package called :mod:"
"`email`, which in turn has a subpackage called :mod:`email.mime` and a "
"module within that subpackage called :mod:`email.mime.text`."
msgstr ""

#: ../Doc/reference/import.rst:94
msgid "Regular packages"
msgstr ""

#: ../Doc/reference/import.rst:99
msgid ""
"Python defines two types of packages, :term:`regular packages <regular "
"package>` and :term:`namespace packages <namespace package>`.  Regular "
"packages are traditional packages as they existed in Python 3.2 and earlier. "
"A regular package is typically implemented as a directory containing an "
"``__init__.py`` file.  When a regular package is imported, this ``__init__."
"py`` file is implicitly executed, and the objects it defines are bound to "
"names in the package's namespace.  The ``__init__.py`` file can contain the "
"same Python code that any other module can contain, and Python will add some "
"additional attributes to the module when it is imported."
msgstr ""

#: ../Doc/reference/import.rst:109
msgid ""
"For example, the following file system layout defines a top level ``parent`` "
"package with three subpackages::"
msgstr ""

#: ../Doc/reference/import.rst:121
msgid ""
"Importing ``parent.one`` will implicitly execute ``parent/__init__.py`` and "
"``parent/one/__init__.py``.  Subsequent imports of ``parent.two`` or "
"``parent.three`` will execute ``parent/two/__init__.py`` and ``parent/three/"
"__init__.py`` respectively."
msgstr ""

#: ../Doc/reference/import.rst:128
msgid "Namespace packages"
msgstr ""

#: ../Doc/reference/import.rst:134
msgid ""
"A namespace package is a composite of various :term:`portions <portion>`, "
"where each portion contributes a subpackage to the parent package.  Portions "
"may reside in different locations on the file system.  Portions may also be "
"found in zip files, on the network, or anywhere else that Python searches "
"during import.  Namespace packages may or may not correspond directly to "
"objects on the file system; they may be virtual modules that have no "
"concrete representation."
msgstr ""

#: ../Doc/reference/import.rst:142
msgid ""
"Namespace packages do not use an ordinary list for their ``__path__`` "
"attribute. They instead use a custom iterable type which will automatically "
"perform a new search for package portions on the next import attempt within "
"that package if the path of their parent package (or :data:`sys.path` for a "
"top level package) changes."
msgstr ""

#: ../Doc/reference/import.rst:148
msgid ""
"With namespace packages, there is no ``parent/__init__.py`` file.  In fact, "
"there may be multiple ``parent`` directories found during import search, "
"where each one is provided by a different portion.  Thus ``parent/one`` may "
"not be physically located next to ``parent/two``.  In this case, Python will "
"create a namespace package for the top-level ``parent`` package whenever it "
"or one of its subpackages is imported."
msgstr ""

#: ../Doc/reference/import.rst:155
msgid "See also :pep:`420` for the namespace package specification."
msgstr ""

#: ../Doc/reference/import.rst:159
msgid "Searching"
msgstr ""

#: ../Doc/reference/import.rst:161
msgid ""
"To begin the search, Python needs the :term:`fully qualified <qualified "
"name>` name of the module (or package, but for the purposes of this "
"discussion, the difference is immaterial) being imported.  This name may "
"come from various arguments to the :keyword:`import` statement, or from the "
"parameters to the :func:`importlib.import_module` or :func:`__import__` "
"functions."
msgstr ""

#: ../Doc/reference/import.rst:167
msgid ""
"This name will be used in various phases of the import search, and it may be "
"the dotted path to a submodule, e.g. ``foo.bar.baz``.  In this case, Python "
"first tries to import ``foo``, then ``foo.bar``, and finally ``foo.bar."
"baz``. If any of the intermediate imports fail, an :exc:"
"`ModuleNotFoundError` is raised."
msgstr ""

#: ../Doc/reference/import.rst:174
msgid "The module cache"
msgstr ""

#: ../Doc/reference/import.rst:179
msgid ""
"The first place checked during import search is :data:`sys.modules`.  This "
"mapping serves as a cache of all modules that have been previously imported, "
"including the intermediate paths.  So if ``foo.bar.baz`` was previously "
"imported, :data:`sys.modules` will contain entries for ``foo``, ``foo.bar``, "
"and ``foo.bar.baz``.  Each key will have as its value the corresponding "
"module object."
msgstr ""

#: ../Doc/reference/import.rst:186
msgid ""
"During import, the module name is looked up in :data:`sys.modules` and if "
"present, the associated value is the module satisfying the import, and the "
"process completes.  However, if the value is ``None``, then an :exc:"
"`ModuleNotFoundError` is raised.  If the module name is missing, Python will "
"continue searching for the module."
msgstr ""

#: ../Doc/reference/import.rst:192
msgid ""
":data:`sys.modules` is writable.  Deleting a key may not destroy the "
"associated module (as other modules may hold references to it), but it will "
"invalidate the cache entry for the named module, causing Python to search "
"anew for the named module upon its next import. The key can also be assigned "
"to ``None``, forcing the next import of the module to result in an :exc:"
"`ModuleNotFoundError`."
msgstr ""

#: ../Doc/reference/import.rst:199
msgid ""
"Beware though, as if you keep a reference to the module object, invalidate "
"its cache entry in :data:`sys.modules`, and then re-import the named module, "
"the two module objects will *not* be the same. By contrast, :func:`importlib."
"reload` will reuse the *same* module object, and simply reinitialise the "
"module contents by rerunning the module's code."
msgstr ""

#: ../Doc/reference/import.rst:207
msgid "Finders and loaders"
msgstr ""

#: ../Doc/reference/import.rst:214
msgid ""
"If the named module is not found in :data:`sys.modules`, then Python's "
"import protocol is invoked to find and load the module.  This protocol "
"consists of two conceptual objects, :term:`finders <finder>` and :term:"
"`loaders <loader>`. A finder's job is to determine whether it can find the "
"named module using whatever strategy it knows about. Objects that implement "
"both of these interfaces are referred to as :term:`importers <importer>` - "
"they return themselves when they find that they can load the requested "
"module."
msgstr ""

#: ../Doc/reference/import.rst:222
msgid ""
"Python includes a number of default finders and importers.  The first one "
"knows how to locate built-in modules, and the second knows how to locate "
"frozen modules.  A third default finder searches an :term:`import path` for "
"modules.  The :term:`import path` is a list of locations that may name file "
"system paths or zip files.  It can also be extended to search for any "
"locatable resource, such as those identified by URLs."
msgstr ""

#: ../Doc/reference/import.rst:229
msgid ""
"The import machinery is extensible, so new finders can be added to extend "
"the range and scope of module searching."
msgstr ""

#: ../Doc/reference/import.rst:232
msgid ""
"Finders do not actually load modules.  If they can find the named module, "
"they return a :dfn:`module spec`, an encapsulation of the module's import-"
"related information, which the import machinery then uses when loading the "
"module."
msgstr ""

#: ../Doc/reference/import.rst:236
msgid ""
"The following sections describe the protocol for finders and loaders in more "
"detail, including how you can create and register new ones to extend the "
"import machinery."
msgstr ""

#: ../Doc/reference/import.rst:240
msgid ""
"In previous versions of Python, finders returned :term:`loaders <loader>` "
"directly, whereas now they return module specs which *contain* loaders. "
"Loaders are still used during import but have fewer responsibilities."
msgstr ""

#: ../Doc/reference/import.rst:246
msgid "Import hooks"
msgstr ""

#: ../Doc/reference/import.rst:256
msgid ""
"The import machinery is designed to be extensible; the primary mechanism for "
"this are the *import hooks*.  There are two types of import hooks: *meta "
"hooks* and *import path hooks*."
msgstr ""

#: ../Doc/reference/import.rst:260
msgid ""
"Meta hooks are called at the start of import processing, before any other "
"import processing has occurred, other than :data:`sys.modules` cache look "
"up. This allows meta hooks to override :data:`sys.path` processing, frozen "
"modules, or even built-in modules.  Meta hooks are registered by adding new "
"finder objects to :data:`sys.meta_path`, as described below."
msgstr ""

#: ../Doc/reference/import.rst:266
msgid ""
"Import path hooks are called as part of :data:`sys.path` (or ``package."
"__path__``) processing, at the point where their associated path item is "
"encountered.  Import path hooks are registered by adding new callables to :"
"data:`sys.path_hooks` as described below."
msgstr ""

#: ../Doc/reference/import.rst:273
msgid "The meta path"
msgstr ""

#: ../Doc/reference/import.rst:279
msgid ""
"When the named module is not found in :data:`sys.modules`, Python next "
"searches :data:`sys.meta_path`, which contains a list of meta path finder "
"objects.  These finders are queried in order to see if they know how to "
"handle the named module.  Meta path finders must implement a method called :"
"meth:`~importlib.abc.MetaPathFinder.find_spec()` which takes three "
"arguments: a name, an import path, and (optionally) a target module.  The "
"meta path finder can use any strategy it wants to determine whether it can "
"handle the named module or not."
msgstr ""

#: ../Doc/reference/import.rst:288
msgid ""
"If the meta path finder knows how to handle the named module, it returns a "
"spec object.  If it cannot handle the named module, it returns ``None``.  "
"If :data:`sys.meta_path` processing reaches the end of its list without "
"returning a spec, then a :exc:`ModuleNotFoundError` is raised.  Any other "
"exceptions raised are simply propagated up, aborting the import process."
msgstr ""

#: ../Doc/reference/import.rst:294
msgid ""
"The :meth:`~importlib.abc.MetaPathFinder.find_spec()` method of meta path "
"finders is called with two or three arguments.  The first is the fully "
"qualified name of the module being imported, for example ``foo.bar.baz``. "
"The second argument is the path entries to use for the module search.  For "
"top-level modules, the second argument is ``None``, but for submodules or "
"subpackages, the second argument is the value of the parent package's "
"``__path__`` attribute. If the appropriate ``__path__`` attribute cannot be "
"accessed, an :exc:`ModuleNotFoundError` is raised.  The third argument is an "
"existing module object that will be the target of loading later. The import "
"system passes in a target module only during reload."
msgstr ""

#: ../Doc/reference/import.rst:305
msgid ""
"The meta path may be traversed multiple times for a single import request. "
"For example, assuming none of the modules involved has already been cached, "
"importing ``foo.bar.baz`` will first perform a top level import, calling "
"``mpf.find_spec(\"foo\", None, None)`` on each meta path finder (``mpf``). "
"After ``foo`` has been imported, ``foo.bar`` will be imported by traversing "
"the meta path a second time, calling ``mpf.find_spec(\"foo.bar\", foo."
"__path__, None)``. Once ``foo.bar`` has been imported, the final traversal "
"will call ``mpf.find_spec(\"foo.bar.baz\", foo.bar.__path__, None)``."
msgstr ""

#: ../Doc/reference/import.rst:315
msgid ""
"Some meta path finders only support top level imports. These importers will "
"always return ``None`` when anything other than ``None`` is passed as the "
"second argument."
msgstr ""

#: ../Doc/reference/import.rst:319
msgid ""
"Python's default :data:`sys.meta_path` has three meta path finders, one that "
"knows how to import built-in modules, one that knows how to import frozen "
"modules, and one that knows how to import modules from an :term:`import "
"path` (i.e. the :term:`path based finder`)."
msgstr ""

#: ../Doc/reference/import.rst:324
msgid ""
"The :meth:`~importlib.abc.MetaPathFinder.find_spec` method of meta path "
"finders replaced :meth:`~importlib.abc.MetaPathFinder.find_module`, which is "
"now deprecated.  While it will continue to work without change, the import "
"machinery will try it only if the finder does not implement ``find_spec()``."
msgstr ""

#: ../Doc/reference/import.rst:333
msgid "Loading"
msgstr ""

#: ../Doc/reference/import.rst:335
msgid ""
"If and when a module spec is found, the import machinery will use it (and "
"the loader it contains) when loading the module.  Here is an approximation "
"of what happens during the loading portion of import::"
msgstr ""

#: ../Doc/reference/import.rst:370
msgid "Note the following details:"
msgstr ""

#: ../Doc/reference/import.rst:372
msgid ""
"If there is an existing module object with the given name in :data:`sys."
"modules`, import will have already returned it."
msgstr ""

#: ../Doc/reference/import.rst:375
msgid ""
"The module will exist in :data:`sys.modules` before the loader executes the "
"module code.  This is crucial because the module code may (directly or "
"indirectly) import itself; adding it to :data:`sys.modules` beforehand "
"prevents unbounded recursion in the worst case and multiple loading in the "
"best."
msgstr ""

#: ../Doc/reference/import.rst:381
msgid ""
"If loading fails, the failing module -- and only the failing module -- gets "
"removed from :data:`sys.modules`.  Any module already in the :data:`sys."
"modules` cache, and any module that was successfully loaded as a side-"
"effect, must remain in the cache.  This contrasts with reloading where even "
"the failing module is left in :data:`sys.modules`."
msgstr ""

#: ../Doc/reference/import.rst:387
msgid ""
"After the module is created but before execution, the import machinery sets "
"the import-related module attributes (\"_init_module_attrs\" in the pseudo-"
"code example above), as summarized in a :ref:`later section <import-mod-"
"attrs>`."
msgstr ""

#: ../Doc/reference/import.rst:392
msgid ""
"Module execution is the key moment of loading in which the module's "
"namespace gets populated.  Execution is entirely delegated to the loader, "
"which gets to decide what gets populated and how."
msgstr ""

#: ../Doc/reference/import.rst:396
msgid ""
"The module created during loading and passed to exec_module() may not be the "
"one returned at the end of import [#fnlo]_."
msgstr ""

#: ../Doc/reference/import.rst:399
msgid ""
"The import system has taken over the boilerplate responsibilities of "
"loaders.  These were previously performed by the :meth:`importlib.abc.Loader."
"load_module` method."
msgstr ""

#: ../Doc/reference/import.rst:405
msgid "Loaders"
msgstr ""

#: ../Doc/reference/import.rst:407
msgid ""
"Module loaders provide the critical function of loading: module execution. "
"The import machinery calls the :meth:`importlib.abc.Loader.exec_module` "
"method with a single argument, the module object to execute.  Any value "
"returned from :meth:`~importlib.abc.Loader.exec_module` is ignored."
msgstr ""

#: ../Doc/reference/import.rst:412
msgid "Loaders must satisfy the following requirements:"
msgstr ""

#: ../Doc/reference/import.rst:414
msgid ""
"If the module is a Python module (as opposed to a built-in module or a "
"dynamically loaded extension), the loader should execute the module's code "
"in the module's global name space (``module.__dict__``)."
msgstr ""

#: ../Doc/reference/import.rst:418
msgid ""
"If the loader cannot execute the module, it should raise an :exc:"
"`ImportError`, although any other exception raised during :meth:`~importlib."
"abc.Loader.exec_module` will be propagated."
msgstr ""

#: ../Doc/reference/import.rst:422
msgid ""
"In many cases, the finder and loader can be the same object; in such cases "
"the :meth:`~importlib.abc.MetaPathFinder.find_spec` method would just return "
"a spec with the loader set to ``self``."
msgstr ""

#: ../Doc/reference/import.rst:426
msgid ""
"Module loaders may opt in to creating the module object during loading by "
"implementing a :meth:`~importlib.abc.Loader.create_module` method. It takes "
"one argument, the module spec, and returns the new module object to use "
"during loading.  ``create_module()`` does not need to set any attributes on "
"the module object.  If the method returns ``None``, the import machinery "
"will create the new module itself."
msgstr ""

#: ../Doc/reference/import.rst:433
msgid "The :meth:`~importlib.abc.Loader.create_module` method of loaders."
msgstr ""

#: ../Doc/reference/import.rst:436
msgid ""
"The :meth:`~importlib.abc.Loader.load_module` method was replaced by :meth:"
"`~importlib.abc.Loader.exec_module` and the import machinery assumed all the "
"boilerplate responsibilities of loading."
msgstr ""

#: ../Doc/reference/import.rst:441
msgid ""
"For compatibility with existing loaders, the import machinery will use the "
"``load_module()`` method of loaders if it exists and the loader does not "
"also implement ``exec_module()``.  However, ``load_module()`` has been "
"deprecated and loaders should implement ``exec_module()`` instead."
msgstr ""

#: ../Doc/reference/import.rst:446
msgid ""
"The ``load_module()`` method must implement all the boilerplate loading "
"functionality described above in addition to executing the module.  All the "
"same constraints apply, with some additional clarification:"
msgstr ""

#: ../Doc/reference/import.rst:450
msgid ""
"If there is an existing module object with the given name in :data:`sys."
"modules`, the loader must use that existing module. (Otherwise, :func:"
"`importlib.reload` will not work correctly.)  If the named module does not "
"exist in :data:`sys.modules`, the loader must create a new module object and "
"add it to :data:`sys.modules`."
msgstr ""

#: ../Doc/reference/import.rst:456
msgid ""
"The module *must* exist in :data:`sys.modules` before the loader executes "
"the module code, to prevent unbounded recursion or multiple loading."
msgstr ""

#: ../Doc/reference/import.rst:460
msgid ""
"If loading fails, the loader must remove any modules it has inserted into :"
"data:`sys.modules`, but it must remove **only** the failing module(s), and "
"only if the loader itself has loaded the module(s) explicitly."
msgstr ""

#: ../Doc/reference/import.rst:465
msgid ""
"A :exc:`DeprecationWarning` is raised when ``exec_module()`` is defined but "
"``create_module()`` is not."
msgstr ""

#: ../Doc/reference/import.rst:469
msgid ""
"An :exc:`ImportError` is raised when ``exec_module()`` is defined but "
"``create_module()`` is not."
msgstr ""

#: ../Doc/reference/import.rst:474
msgid "Submodules"
msgstr ""

#: ../Doc/reference/import.rst:476
msgid ""
"When a submodule is loaded using any mechanism (e.g. ``importlib`` APIs, the "
"``import`` or ``import-from`` statements, or built-in ``__import__()``) a "
"binding is placed in the parent module's namespace to the submodule object. "
"For example, if package ``spam`` has a submodule ``foo``, after importing "
"``spam.foo``, ``spam`` will have an attribute ``foo`` which is bound to the "
"submodule.  Let's say you have the following directory structure::"
msgstr ""

#: ../Doc/reference/import.rst:488
msgid "and ``spam/__init__.py`` has the following lines in it::"
msgstr ""

#: ../Doc/reference/import.rst:493
msgid ""
"then executing the following puts a name binding to ``foo`` and ``bar`` in "
"the ``spam`` module::"
msgstr ""

#: ../Doc/reference/import.rst:502
msgid ""
"Given Python's familiar name binding rules this might seem surprising, but "
"it's actually a fundamental feature of the import system.  The invariant "
"holding is that if you have ``sys.modules['spam']`` and ``sys.modules['spam."
"foo']`` (as you would after the above import), the latter must appear as the "
"``foo`` attribute of the former."
msgstr ""

#: ../Doc/reference/import.rst:509
msgid "Module spec"
msgstr ""

#: ../Doc/reference/import.rst:511
msgid ""
"The import machinery uses a variety of information about each module during "
"import, especially before loading.  Most of the information is common to all "
"modules.  The purpose of a module's spec is to encapsulate this import-"
"related information on a per-module basis."
msgstr ""

#: ../Doc/reference/import.rst:516
msgid ""
"Using a spec during import allows state to be transferred between import "
"system components, e.g. between the finder that creates the module spec and "
"the loader that executes it.  Most importantly, it allows the import "
"machinery to perform the boilerplate operations of loading, whereas without "
"a module spec the loader had that responsibility."
msgstr ""

#: ../Doc/reference/import.rst:522
msgid ""
"See :class:`~importlib.machinery.ModuleSpec` for more specifics on what "
"information a module's spec may hold."
msgstr ""

#: ../Doc/reference/import.rst:530
msgid "Import-related module attributes"
msgstr ""

#: ../Doc/reference/import.rst:532
msgid ""
"The import machinery fills in these attributes on each module object during "
"loading, based on the module's spec, before the loader executes the module."
msgstr ""

#: ../Doc/reference/import.rst:538
msgid ""
"The ``__name__`` attribute must be set to the fully-qualified name of the "
"module.  This name is used to uniquely identify the module in the import "
"system."
msgstr ""

#: ../Doc/reference/import.rst:544
msgid ""
"The ``__loader__`` attribute must be set to the loader object that the "
"import machinery used when loading the module.  This is mostly for "
"introspection, but can be used for additional loader-specific functionality, "
"for example getting data associated with a loader."
msgstr ""

#: ../Doc/reference/import.rst:551
msgid ""
"The module's ``__package__`` attribute must be set.  Its value must be a "
"string, but it can be the same value as its ``__name__``.  When the module "
"is a package, its ``__package__`` value should be set to its ``__name__``.  "
"When the module is not a package, ``__package__`` should be set to the empty "
"string for top-level modules, or for submodules, to the parent package's "
"name.  See :pep:`366` for further details."
msgstr ""

#: ../Doc/reference/import.rst:559
msgid ""
"This attribute is used instead of ``__name__`` to calculate explicit "
"relative imports for main modules, as defined in :pep:`366`. It is expected "
"to have the same value as ``__spec__.parent``."
msgstr ""

#: ../Doc/reference/import.rst:563
msgid ""
"The value of ``__package__`` is expected to be the same as ``__spec__."
"parent``."
msgstr ""

#: ../Doc/reference/import.rst:569
msgid ""
"The ``__spec__`` attribute must be set to the module spec that was used when "
"importing the module. Setting ``__spec__`` appropriately applies equally to :"
"ref:`modules initialized during interpreter startup <programs>`.  The one "
"exception is ``__main__``, where ``__spec__`` is :ref:`set to None in some "
"cases <main_spec>`."
msgstr ""

#: ../Doc/reference/import.rst:575
msgid ""
"When ``__package__`` is not defined, ``__spec__.parent`` is used as a "
"fallback."
msgstr ""

#: ../Doc/reference/import.rst:580
msgid ""
"``__spec__.parent`` is used as a fallback when ``__package__`` is not "
"defined."
msgstr ""

#: ../Doc/reference/import.rst:586
msgid ""
"If the module is a package (either regular or namespace), the module "
"object's ``__path__`` attribute must be set.  The value must be iterable, "
"but may be empty if ``__path__`` has no further significance. If "
"``__path__`` is not empty, it must produce strings when iterated over. More "
"details on the semantics of ``__path__`` are given :ref:`below <package-path-"
"rules>`."
msgstr ""

#: ../Doc/reference/import.rst:593
msgid "Non-package modules should not have a ``__path__`` attribute."
msgstr ""

#: ../Doc/reference/import.rst:598
msgid ""
"``__file__`` is optional. If set, this attribute's value must be a string.  "
"The import system may opt to leave ``__file__`` unset if it has no semantic "
"meaning (e.g. a module loaded from a database)."
msgstr ""

#: ../Doc/reference/import.rst:602
msgid ""
"If ``__file__`` is set, it may also be appropriate to set the ``__cached__`` "
"attribute which is the path to any compiled version of the code (e.g. byte-"
"compiled file). The file does not need to exist to set this attribute; the "
"path can simply point to where the compiled file would exist (see :pep:"
"`3147`)."
msgstr ""

#: ../Doc/reference/import.rst:608
msgid ""
"It is also appropriate to set ``__cached__`` when ``__file__`` is not set.  "
"However, that scenario is quite atypical.  Ultimately, the loader is what "
"makes use of ``__file__`` and/or ``__cached__``.  So if a loader can load "
"from a cached module but otherwise does not load from a file, that atypical "
"scenario may be appropriate."
msgstr ""

#: ../Doc/reference/import.rst:617
msgid "module.__path__"
msgstr ""

#: ../Doc/reference/import.rst:619
msgid ""
"By definition, if a module has an ``__path__`` attribute, it is a package, "
"regardless of its value."
msgstr ""

#: ../Doc/reference/import.rst:622
msgid ""
"A package's ``__path__`` attribute is used during imports of its "
"subpackages. Within the import machinery, it functions much the same as :"
"data:`sys.path`, i.e. providing a list of locations to search for modules "
"during import. However, ``__path__`` is typically much more constrained "
"than :data:`sys.path`."
msgstr ""

#: ../Doc/reference/import.rst:628
msgid ""
"``__path__`` must be an iterable of strings, but it may be empty. The same "
"rules used for :data:`sys.path` also apply to a package's ``__path__``, and :"
"data:`sys.path_hooks` (described below) are consulted when traversing a "
"package's ``__path__``."
msgstr ""

#: ../Doc/reference/import.rst:633
msgid ""
"A package's ``__init__.py`` file may set or alter the package's ``__path__`` "
"attribute, and this was typically the way namespace packages were "
"implemented prior to :pep:`420`.  With the adoption of :pep:`420`, namespace "
"packages no longer need to supply ``__init__.py`` files containing only "
"``__path__`` manipulation code; the import machinery automatically sets "
"``__path__`` correctly for the namespace package."
msgstr ""

#: ../Doc/reference/import.rst:641
msgid "Module reprs"
msgstr ""

#: ../Doc/reference/import.rst:643
msgid ""
"By default, all modules have a usable repr, however depending on the "
"attributes set above, and in the module's spec, you can more explicitly "
"control the repr of module objects."
msgstr ""

#: ../Doc/reference/import.rst:647
msgid ""
"If the module has a spec (``__spec__``), the import machinery will try to "
"generate a repr from it.  If that fails or there is no spec, the import "
"system will craft a default repr using whatever information is available on "
"the module.  It will try to use the ``module.__name__``, ``module."
"__file__``, and ``module.__loader__`` as input into the repr, with defaults "
"for whatever information is missing."
msgstr ""

#: ../Doc/reference/import.rst:654
msgid "Here are the exact rules used:"
msgstr ""

#: ../Doc/reference/import.rst:656
msgid ""
"If the module has a ``__spec__`` attribute, the information in the spec is "
"used to generate the repr.  The \"name\", \"loader\", \"origin\", and "
"\"has_location\" attributes are consulted."
msgstr ""

#: ../Doc/reference/import.rst:660
msgid ""
"If the module has a ``__file__`` attribute, this is used as part of the "
"module's repr."
msgstr ""

#: ../Doc/reference/import.rst:663
msgid ""
"If the module has no ``__file__`` but does have a ``__loader__`` that is not "
"``None``, then the loader's repr is used as part of the module's repr."
msgstr ""

#: ../Doc/reference/import.rst:666
msgid "Otherwise, just use the module's ``__name__`` in the repr."
msgstr ""

#: ../Doc/reference/import.rst:668
msgid ""
"Use of :meth:`loader.module_repr() <importlib.abc.Loader.module_repr>` has "
"been deprecated and the module spec is now used by the import machinery to "
"generate a module repr."
msgstr ""

#: ../Doc/reference/import.rst:673
msgid ""
"For backward compatibility with Python 3.3, the module repr will be "
"generated by calling the loader's :meth:`~importlib.abc.Loader.module_repr` "
"method, if defined, before trying either approach described above.  However, "
"the method is deprecated."
msgstr ""

#: ../Doc/reference/import.rst:680
msgid "The Path Based Finder"
msgstr ""

#: ../Doc/reference/import.rst:685
msgid ""
"As mentioned previously, Python comes with several default meta path "
"finders. One of these, called the :term:`path based finder` (:class:"
"`~importlib.machinery.PathFinder`), searches an :term:`import path`, which "
"contains a list of :term:`path entries <path entry>`.  Each path entry names "
"a location to search for modules."
msgstr ""

#: ../Doc/reference/import.rst:691
msgid ""
"The path based finder itself doesn't know how to import anything. Instead, "
"it traverses the individual path entries, associating each of them with a "
"path entry finder that knows how to handle that particular kind of path."
msgstr ""

#: ../Doc/reference/import.rst:695
msgid ""
"The default set of path entry finders implement all the semantics for "
"finding modules on the file system, handling special file types such as "
"Python source code (``.py`` files), Python byte code (``.pyc`` files) and "
"shared libraries (e.g. ``.so`` files). When supported by the :mod:"
"`zipimport` module in the standard library, the default path entry finders "
"also handle loading all of these file types (other than shared libraries) "
"from zipfiles."
msgstr ""

#: ../Doc/reference/import.rst:702
msgid ""
"Path entries need not be limited to file system locations.  They can refer "
"to URLs, database queries, or any other location that can be specified as a "
"string."
msgstr ""

#: ../Doc/reference/import.rst:706
msgid ""
"The path based finder provides additional hooks and protocols so that you "
"can extend and customize the types of searchable path entries.  For example, "
"if you wanted to support path entries as network URLs, you could write a "
"hook that implements HTTP semantics to find modules on the web.  This hook "
"(a callable) would return a :term:`path entry finder` supporting the "
"protocol described below, which was then used to get a loader for the module "
"from the web."
msgstr ""

#: ../Doc/reference/import.rst:714
msgid ""
"A word of warning: this section and the previous both use the term *finder*, "
"distinguishing between them by using the terms :term:`meta path finder` and :"
"term:`path entry finder`.  These two types of finders are very similar, "
"support similar protocols, and function in similar ways during the import "
"process, but it's important to keep in mind that they are subtly different. "
"In particular, meta path finders operate at the beginning of the import "
"process, as keyed off the :data:`sys.meta_path` traversal."
msgstr ""

#: ../Doc/reference/import.rst:722
msgid ""
"By contrast, path entry finders are in a sense an implementation detail of "
"the path based finder, and in fact, if the path based finder were to be "
"removed from :data:`sys.meta_path`, none of the path entry finder semantics "
"would be invoked."
msgstr ""

#: ../Doc/reference/import.rst:729
msgid "Path entry finders"
msgstr ""

#: ../Doc/reference/import.rst:737
msgid ""
"The :term:`path based finder` is responsible for finding and loading Python "
"modules and packages whose location is specified with a string :term:`path "
"entry`.  Most path entries name locations in the file system, but they need "
"not be limited to this."
msgstr ""

#: ../Doc/reference/import.rst:742
msgid ""
"As a meta path finder, the :term:`path based finder` implements the :meth:"
"`~importlib.abc.MetaPathFinder.find_spec` protocol previously described, "
"however it exposes additional hooks that can be used to customize how "
"modules are found and loaded from the :term:`import path`."
msgstr ""

#: ../Doc/reference/import.rst:747
msgid ""
"Three variables are used by the :term:`path based finder`, :data:`sys."
"path`, :data:`sys.path_hooks` and :data:`sys.path_importer_cache`.  The "
"``__path__`` attributes on package objects are also used.  These provide "
"additional ways that the import machinery can be customized."
msgstr ""

#: ../Doc/reference/import.rst:752
msgid ""
":data:`sys.path` contains a list of strings providing search locations for "
"modules and packages.  It is initialized from the :data:`PYTHONPATH` "
"environment variable and various other installation- and implementation-"
"specific defaults.  Entries in :data:`sys.path` can name directories on the "
"file system, zip files, and potentially other \"locations\" (see the :mod:"
"`site` module) that should be searched for modules, such as URLs, or "
"database queries.  Only strings and bytes should be present on :data:`sys."
"path`; all other data types are ignored.  The encoding of bytes entries is "
"determined by the individual :term:`path entry finders <path entry finder>`."
msgstr ""

#: ../Doc/reference/import.rst:763
msgid ""
"The :term:`path based finder` is a :term:`meta path finder`, so the import "
"machinery begins the :term:`import path` search by calling the path based "
"finder's :meth:`~importlib.machinery.PathFinder.find_spec` method as "
"described previously.  When the ``path`` argument to :meth:`~importlib."
"machinery.PathFinder.find_spec` is given, it will be a list of string paths "
"to traverse - typically a package's ``__path__`` attribute for an import "
"within that package.  If the ``path`` argument is ``None``, this indicates a "
"top level import and :data:`sys.path` is used."
msgstr ""

#: ../Doc/reference/import.rst:772
msgid ""
"The path based finder iterates over every entry in the search path, and for "
"each of these, looks for an appropriate :term:`path entry finder` (:class:"
"`~importlib.abc.PathEntryFinder`) for the path entry.  Because this can be "
"an expensive operation (e.g. there may be `stat()` call overheads for this "
"search), the path based finder maintains a cache mapping path entries to "
"path entry finders.  This cache is maintained in :data:`sys."
"path_importer_cache` (despite the name, this cache actually stores finder "
"objects rather than being limited to :term:`importer` objects). In this way, "
"the expensive search for a particular :term:`path entry` location's :term:"
"`path entry finder` need only be done once.  User code is free to remove "
"cache entries from :data:`sys.path_importer_cache` forcing the path based "
"finder to perform the path entry search again [#fnpic]_."
msgstr ""

#: ../Doc/reference/import.rst:785
msgid ""
"If the path entry is not present in the cache, the path based finder "
"iterates over every callable in :data:`sys.path_hooks`.  Each of the :term:"
"`path entry hooks <path entry hook>` in this list is called with a single "
"argument, the path entry to be searched.  This callable may either return a :"
"term:`path entry finder` that can handle the path entry, or it may raise :"
"exc:`ImportError`.  An :exc:`ImportError` is used by the path based finder "
"to signal that the hook cannot find a :term:`path entry finder` for that :"
"term:`path entry`.  The exception is ignored and :term:`import path` "
"iteration continues.  The hook should expect either a string or bytes "
"object; the encoding of bytes objects is up to the hook (e.g. it may be a "
"file system encoding, UTF-8, or something else), and if the hook cannot "
"decode the argument, it should raise :exc:`ImportError`."
msgstr ""

#: ../Doc/reference/import.rst:799
msgid ""
"If :data:`sys.path_hooks` iteration ends with no :term:`path entry finder` "
"being returned, then the path based finder's :meth:`~importlib.machinery."
"PathFinder.find_spec` method will store ``None`` in :data:`sys."
"path_importer_cache` (to indicate that there is no finder for this path "
"entry) and return ``None``, indicating that this :term:`meta path finder` "
"could not find the module."
msgstr ""

#: ../Doc/reference/import.rst:806
msgid ""
"If a :term:`path entry finder` *is* returned by one of the :term:`path entry "
"hook` callables on :data:`sys.path_hooks`, then the following protocol is "
"used to ask the finder for a module spec, which is then used when loading "
"the module."
msgstr ""

#: ../Doc/reference/import.rst:811
msgid ""
"The current working directory -- denoted by an empty string -- is handled "
"slightly differently from other entries on :data:`sys.path`. First, if the "
"current working directory is found to not exist, no value is stored in :data:"
"`sys.path_importer_cache`. Second, the value for the current working "
"directory is looked up fresh for each module lookup. Third, the path used "
"for :data:`sys.path_importer_cache` and returned by :meth:`importlib."
"machinery.PathFinder.find_spec` will be the actual current working directory "
"and not the empty string."
msgstr ""

#: ../Doc/reference/import.rst:821
msgid "Path entry finder protocol"
msgstr ""

#: ../Doc/reference/import.rst:823
msgid ""
"In order to support imports of modules and initialized packages and also to "
"contribute portions to namespace packages, path entry finders must implement "
"the :meth:`~importlib.abc.PathEntryFinder.find_spec` method."
msgstr ""

#: ../Doc/reference/import.rst:827
msgid ""
":meth:`~importlib.abc.PathEntryFinder.find_spec` takes two argument, the "
"fully qualified name of the module being imported, and the (optional) target "
"module.  ``find_spec()`` returns a fully populated spec for the module. This "
"spec will always have \"loader\" set (with one exception)."
msgstr ""

#: ../Doc/reference/import.rst:832
msgid ""
"To indicate to the import machinery that the spec represents a namespace :"
"term:`portion`. the path entry finder sets \"loader\" on the spec to "
"``None`` and \"submodule_search_locations\" to a list containing the portion."
msgstr ""

#: ../Doc/reference/import.rst:837
msgid ""
":meth:`~importlib.abc.PathEntryFinder.find_spec` replaced :meth:`~importlib."
"abc.PathEntryFinder.find_loader` and :meth:`~importlib.abc.PathEntryFinder."
"find_module`, both of which are now deprecated, but will be used if "
"``find_spec()`` is not defined."
msgstr ""

#: ../Doc/reference/import.rst:843
msgid ""
"Older path entry finders may implement one of these two deprecated methods "
"instead of ``find_spec()``.  The methods are still respected for the sake of "
"backward compatibility.  However, if ``find_spec()`` is implemented on the "
"path entry finder, the legacy methods are ignored."
msgstr ""

#: ../Doc/reference/import.rst:848
msgid ""
":meth:`~importlib.abc.PathEntryFinder.find_loader` takes one argument, the "
"fully qualified name of the module being imported.  ``find_loader()`` "
"returns a 2-tuple where the first item is the loader and the second item is "
"a namespace :term:`portion`.  When the first item (i.e. the loader) is "
"``None``, this means that while the path entry finder does not have a loader "
"for the named module, it knows that the path entry contributes to a "
"namespace portion for the named module.  This will almost always be the case "
"where Python is asked to import a namespace package that has no physical "
"presence on the file system.  When a path entry finder returns ``None`` for "
"the loader, the second item of the 2-tuple return value must be a sequence, "
"although it can be empty."
msgstr ""

#: ../Doc/reference/import.rst:860
msgid ""
"If ``find_loader()`` returns a non-``None`` loader value, the portion is "
"ignored and the loader is returned from the path based finder, terminating "
"the search through the path entries."
msgstr ""

#: ../Doc/reference/import.rst:864
msgid ""
"For backwards compatibility with other implementations of the import "
"protocol, many path entry finders also support the same, traditional "
"``find_module()`` method that meta path finders support. However path entry "
"finder ``find_module()`` methods are never called with a ``path`` argument "
"(they are expected to record the appropriate path information from the "
"initial call to the path hook)."
msgstr ""

#: ../Doc/reference/import.rst:871
msgid ""
"The ``find_module()`` method on path entry finders is deprecated, as it does "
"not allow the path entry finder to contribute portions to namespace "
"packages.  If both ``find_loader()`` and ``find_module()`` exist on a path "
"entry finder, the import system will always call ``find_loader()`` in "
"preference to ``find_module()``."
msgstr ""

#: ../Doc/reference/import.rst:879
msgid "Replacing the standard import system"
msgstr ""

#: ../Doc/reference/import.rst:881
msgid ""
"The most reliable mechanism for replacing the entire import system is to "
"delete the default contents of :data:`sys.meta_path`, replacing them "
"entirely with a custom meta path hook."
msgstr ""

#: ../Doc/reference/import.rst:885
msgid ""
"If it is acceptable to only alter the behaviour of import statements without "
"affecting other APIs that access the import system, then replacing the "
"builtin :func:`__import__` function may be sufficient. This technique may "
"also be employed at the module level to only alter the behaviour of import "
"statements within that module."
msgstr ""

#: ../Doc/reference/import.rst:891
msgid ""
"To selectively prevent import of some modules from a hook early on the meta "
"path (rather than disabling the standard import system entirely), it is "
"sufficient to raise :exc:`ModuleNoFoundError` directly from :meth:"
"`~importlib.abc.MetaPathFinder.find_spec` instead of returning ``None``. The "
"latter indicates that the meta path search should continue, while raising an "
"exception terminates it immediately."
msgstr ""

#: ../Doc/reference/import.rst:900
msgid "Special considerations for __main__"
msgstr ""

#: ../Doc/reference/import.rst:902
msgid ""
"The :mod:`__main__` module is a special case relative to Python's import "
"system.  As noted :ref:`elsewhere <programs>`, the ``__main__`` module is "
"directly initialized at interpreter startup, much like :mod:`sys` and :mod:"
"`builtins`.  However, unlike those two, it doesn't strictly qualify as a "
"built-in module.  This is because the manner in which ``__main__`` is "
"initialized depends on the flags and other options with which the "
"interpreter is invoked."
msgstr ""

#: ../Doc/reference/import.rst:913
msgid "__main__.__spec__"
msgstr ""

#: ../Doc/reference/import.rst:915
msgid ""
"Depending on how :mod:`__main__` is initialized, ``__main__.__spec__`` gets "
"set appropriately or to ``None``."
msgstr ""

#: ../Doc/reference/import.rst:918
msgid ""
"When Python is started with the :option:`-m` option, ``__spec__`` is set to "
"the module spec of the corresponding module or package. ``__spec__`` is also "
"populated when the ``__main__`` module is loaded as part of executing a "
"directory, zipfile or other :data:`sys.path` entry."
msgstr ""

#: ../Doc/reference/import.rst:923
msgid ""
"In :ref:`the remaining cases <using-on-interface-options>` ``__main__."
"__spec__`` is set to ``None``, as the code used to populate the :mod:"
"`__main__` does not correspond directly with an importable module:"
msgstr ""

#: ../Doc/reference/import.rst:927
msgid "interactive prompt"
msgstr ""

#: ../Doc/reference/import.rst:928
msgid "-c switch"
msgstr ""

#: ../Doc/reference/import.rst:929
msgid "running from stdin"
msgstr ""

#: ../Doc/reference/import.rst:930
msgid "running directly from a source or bytecode file"
msgstr ""

#: ../Doc/reference/import.rst:932
msgid ""
"Note that ``__main__.__spec__`` is always ``None`` in the last case, *even "
"if* the file could technically be imported directly as a module instead. Use "
"the :option:`-m` switch if valid module metadata is desired in :mod:"
"`__main__`."
msgstr ""

#: ../Doc/reference/import.rst:937
msgid ""
"Note also that even when ``__main__`` corresponds with an importable module "
"and ``__main__.__spec__`` is set accordingly, they're still considered "
"*distinct* modules. This is due to the fact that blocks guarded by ``if "
"__name__ == \"__main__\":`` checks only execute when the module is used to "
"populate the ``__main__`` namespace, and not during normal import."
msgstr ""

#: ../Doc/reference/import.rst:945
msgid "Open issues"
msgstr ""

#: ../Doc/reference/import.rst:947
msgid "XXX It would be really nice to have a diagram."
msgstr ""

#: ../Doc/reference/import.rst:949
msgid ""
"XXX * (import_machinery.rst) how about a section devoted just to the "
"attributes of modules and packages, perhaps expanding upon or supplanting "
"the related entries in the data model reference page?"
msgstr ""

#: ../Doc/reference/import.rst:953
msgid ""
"XXX runpy, pkgutil, et al in the library manual should all get \"See Also\" "
"links at the top pointing to the new import system section."
msgstr ""

#: ../Doc/reference/import.rst:956
msgid ""
"XXX Add more explanation regarding the different ways in which ``__main__`` "
"is initialized?"
msgstr ""

#: ../Doc/reference/import.rst:959
msgid ""
"XXX Add more info on ``__main__`` quirks/pitfalls (i.e. copy from :pep:"
"`395`)."
msgstr ""

#: ../Doc/reference/import.rst:964
msgid "References"
msgstr ""

#: ../Doc/reference/import.rst:966
msgid ""
"The import machinery has evolved considerably since Python's early days.  "
"The original `specification for packages <http://legacy.python.org/doc/"
"essays/packages.html>`_ is still available to read, although some details "
"have changed since the writing of that document."
msgstr ""

#: ../Doc/reference/import.rst:971
msgid ""
"The original specification for :data:`sys.meta_path` was :pep:`302`, with "
"subsequent extension in :pep:`420`."
msgstr ""

#: ../Doc/reference/import.rst:974
msgid ""
":pep:`420` introduced :term:`namespace packages <namespace package>` for "
"Python 3.3.  :pep:`420` also introduced the :meth:`find_loader` protocol as "
"an alternative to :meth:`find_module`."
msgstr ""

#: ../Doc/reference/import.rst:978
msgid ""
":pep:`366` describes the addition of the ``__package__`` attribute for "
"explicit relative imports in main modules."
msgstr ""

#: ../Doc/reference/import.rst:981
msgid ""
":pep:`328` introduced absolute and explicit relative imports and initially "
"proposed ``__name__`` for semantics :pep:`366` would eventually specify for "
"``__package__``."
msgstr ""

#: ../Doc/reference/import.rst:985
msgid ":pep:`338` defines executing modules as scripts."
msgstr ""

#: ../Doc/reference/import.rst:987
msgid ""
":pep:`451` adds the encapsulation of per-module import state in spec "
"objects.  It also off-loads most of the boilerplate responsibilities of "
"loaders back onto the import machinery.  These changes allow the deprecation "
"of several APIs in the import system and also addition of new methods to "
"finders and loaders."
msgstr ""

#: ../Doc/reference/import.rst:994
msgid "Footnotes"
msgstr "Notes"

#: ../Doc/reference/import.rst:995
msgid "See :class:`types.ModuleType`."
msgstr ""

#: ../Doc/reference/import.rst:997
msgid ""
"The importlib implementation avoids using the return value directly. "
"Instead, it gets the module object by looking the module name up in :data:"
"`sys.modules`.  The indirect effect of this is that an imported module may "
"replace itself in :data:`sys.modules`.  This is implementation-specific "
"behavior that is not guaranteed to work in other Python implementations."
msgstr ""

#: ../Doc/reference/import.rst:1004
msgid ""
"In legacy code, it is possible to find instances of :class:`imp."
"NullImporter` in the :data:`sys.path_importer_cache`.  It is recommended "
"that code be changed to use ``None`` instead.  See :ref:`portingpythoncode` "
"for more details."
msgstr ""