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��Z#G d"d#� d#e"�Z$dS )$z(Abstract base classes related to import.� )�
_bootstrap)�_bootstrap_external)� machinery� N�_frozen_importlib)�Protocol�runtime_checkablec G sZ |D ]P}| � |� td urztt|j�}W n tyH tt|j�}Y n0 | � |� qd S �N)�registerr �getattr�__name__�AttributeError�_frozen_importlib_external)� abstract_cls�classes�cls�
frozen_cls� r �#/usr/lib/python3.9/importlib/abc.py� _register s
r c @ s e Zd ZdZejddd��ZdS )�Findera< Legacy abstract base class for import finders.
It may be subclassed for compatibility with legacy third party
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implementations should derive from the more specific MetaPathFinder
or PathEntryFinder ABCs.
Deprecated since Python 3.3
Nc C s dS )z�An abstract method that should find a module.
The fullname is a str and the optional path is a str or None.
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Nr )�self�fullname�pathr r r � find_module+ s zFinder.find_module)N)r �
__module__� __qualname__�__doc__�abc�abstractmethodr r r r r r s
r )� metaclassc @ s e Zd ZdZdd� Zdd� ZdS )�MetaPathFinderz8Abstract base class for import finders on sys.meta_path.c C s< t jdtdd� t| d�s dS | �||�}|dur8|jS dS )a_ Return a loader for the module.
If no module is found, return None. The fullname is a str and
the path is a list of strings or None.
This method is deprecated since Python 3.4 in favor of
finder.find_spec(). If find_spec() exists then backwards-compatible
functionality is provided for this method.
zxMetaPathFinder.find_module() is deprecated since Python 3.4 in favor of MetaPathFinder.find_spec() (available since 3.4)� ��
stacklevel� find_specN)�warnings�warn�DeprecationWarning�hasattrr% �loader)r r r �foundr r r r : s �
zMetaPathFinder.find_modulec C s dS )z�An optional method for clearing the finder's cache, if any.
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Nr �r r r r �invalidate_cachesO s z MetaPathFinder.invalidate_cachesN)r r r r r r- r r r r r! 3 s r! c @ s& e Zd ZdZdd� ZejZdd� ZdS )�PathEntryFinderz>Abstract base class for path entry finders used by PathFinder.c C s\ t jdtdd� t| d�s"dg fS | �|�}|durP|js@g }n|j}|j|fS dg fS dS )a[ Return (loader, namespace portion) for the path entry.
The fullname is a str. The namespace portion is a sequence of
path entries contributing to part of a namespace package. The
sequence may be empty. If loader is not None, the portion will
be ignored.
The portion will be discarded if another path entry finder
locates the module as a normal module or package.
This method is deprecated since Python 3.4 in favor of
finder.find_spec(). If find_spec() is provided than backwards-compatible
functionality is provided.
zzPathEntryFinder.find_loader() is deprecated since Python 3.4 in favor of PathEntryFinder.find_spec() (available since 3.4)r" r# r% N)r& r' r( r) r% �submodule_search_locationsr* )r r r+ �portionsr r r � find_loader_ s �
zPathEntryFinder.find_loaderc C s dS )z�An optional method for clearing the finder's cache, if any.
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Nr r, r r r r- � s z!PathEntryFinder.invalidate_cachesN) r r r r r1 r �_find_module_shimr r- r r r r r. X s r. c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) �Loaderz'Abstract base class for import loaders.c C s dS )z�Return a module to initialize and into which to load.
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Nr )r �specr r r �
create_module� s zLoader.create_modulec C s t | d�st�t�| |�S )a� Return the loaded module.
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functionality for this method.
� exec_module)r) � ImportErrorr �_load_module_shim�r r r r r � load_module� s
zLoader.load_modulec C s t �dS )z�Return a module's repr.
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zLoader.module_reprN)r r r r r5 r: r= r r r r r3 � s
r3 c @ s e Zd ZdZejdd� �ZdS )�ResourceLoaderz�Abstract base class for loaders which can return data from their
back-end storage.
This ABC represents one of the optional protocols specified by PEP 302.
c C s t �dS )zwAbstract method which when implemented should return the bytes for
the specified path. The path must be a str.N)�OSError�r r r r r �get_data� s zResourceLoader.get_dataN)r r r r r r rA r r r r r> � s r> c @ sL e Zd ZdZdd� Zdd� Zejdd� �Ze d d d
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InspectLoaderz�Abstract base class for loaders which support inspection about the
modules they can load.
This ABC represents one of the optional protocols specified by PEP 302.
c C s t �dS )z�Optional method which when implemented should return whether the
module is a package. The fullname is a str. Returns a bool.
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N�r7 r9 r r r �
is_package� s zInspectLoader.is_packagec C s | � |�}|du rdS | �|�S )a Method which returns the code object for the module.
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(e.g. built-in module). Raises ImportError if the module cannot be
found.
N)�
get_source�source_to_code)r r �sourcer r r �get_code� s
zInspectLoader.get_codec C s t �dS )z�Abstract method which should return the source code for the
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NrC r9 r r r rE � s zInspectLoader.get_source�<string>c C s t | |ddd�S )z�Compile 'data' into a code object.
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_LoaderBasicsr6 r: r r r r rB � s
rB c @ s& e Zd ZdZejdd� �Zdd� ZdS )�ExecutionLoaderz�Abstract base class for loaders that wish to support the execution of
modules as scripts.
This ABC represents one of the optional protocols specified in PEP 302.
c C s t �dS )z�Abstract method which should return the value that __file__ is to be
set to.
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NrC r9 r r r � get_filename s z ExecutionLoader.get_filenamec C sR | � |�}|du rdS z| �|�}W n ty@ | �|� Y S 0 | �||�S dS )z�Method to return the code object for fullname.
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N)rE rQ r7 rF )r r rG r r r r rH s
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FileLoaderz[Abstract base class partially implementing the ResourceLoader and
ExecutionLoader ABCs.N)r r r r r r r r rR " s rR c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) � SourceLoadera� Abstract base class for loading source code (and optionally any
corresponding bytecode).
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ResourceLoader and ExecutionLoader need to be implemented. To also support
loading from bytecode, the optional methods specified directly by this ABC
is required.
Inherited abstractmethods not implemented in this ABC:
* ResourceLoader.get_data
* ExecutionLoader.get_filename
c C s$ | j jtj u rt�t| � |�d �S )z6Return the (int) modification time for the path (str).�mtime)�
path_stats�__func__rS r? �intr@ r r r �
path_mtime< s zSourceLoader.path_mtimec C s | j jtj u rt�d| � |�iS )a Return a metadata dict for the source pointed to by the path (str).
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code modification;
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rT )rX rV rS r? r@ r r r rU B s zSourceLoader.path_statsc C s dS )a Write the bytes to the path (if possible).
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reason the file cannot be written because of permissions, fail
silently.
Nr )r r rM r r r �set_dataM s zSourceLoader.set_dataN)r r r r rX rU rY r r r r rS + s rS c @ sH e Zd ZdZejdd� �Zejdd� �Zejdd� �Zejdd � �Z d
S ) �ResourceReaderz�Abstract base class to provide resource-reading support.
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or an object compatible with this ABC.
c C s t �dS )a Return an opened, file-like object for binary reading.
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and thus not contain any subdirectory components.
If the resource cannot be found, FileNotFoundError is raised.
N��FileNotFoundError�r �resourcer r r �
open_resourcec s z ResourceReader.open_resourcec C s t �dS )a! Return the file system path to the specified resource.
The 'resource' argument is expected to represent only a file name
and thus not contain any subdirectory components.
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FileNotFoundError.
Nr[ r] r r r �
resource_pathn s
z ResourceReader.resource_pathc C s t �dS )z7Return True if the named 'name' is consider a resource.Nr[ )r �namer r r � is_resourcez s zResourceReader.is_resourcec C s g S )z?Return an iterable of strings over the contents of the package.r r, r r r �contents s zResourceReader.contentsN)
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Nr r, r r r �iterdir� s zTraversable.iterdirc C s dS �z0
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read_bytes� s zTraversable.read_bytesNc C s dS rf r )r �encodingr r r � read_text� s zTraversable.read_textc C s dS )z.
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Nr r, r r r �is_dir� s zTraversable.is_dirc C s dS )z/
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Nr �r �childr r r �joinpath� s zTraversable.joinpathc C s dS rl r rm r r r � __truediv__� s zTraversable.__truediv__�rc O s dS )z�
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Nr )r �mode�args�kwargsr r r �open� s zTraversable.openc C s dS )zM
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Nr r, r r r ra � s zTraversable.name)N)rq )r r r r r r re rg ri rj rk ro rp ru �abstractpropertyra r r r r rd � s&
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� Z d S ) �TraversableResourcesc C s dS )z3Return a Traversable object for the loaded package.Nr r, r r r �files� s zTraversableResources.filesc C s | � � �|��d�S )N�rb)rx ro ru r] r r r r_ � s z"TraversableResources.open_resourcec C s t |��d S r r[ r] r r r r` � s z"TraversableResources.resource_pathc C s | � � �|��� S r )rx ro �isfiler@ r r r rb � s z TraversableResources.is_resourcec C s dd� | � � �� D �S )Nc s s | ] }|j V qd S r )ra )�.0�itemr r r � <genexpr>� � z0TraversableResources.contents.<locals>.<genexpr>)rx re r, r r r rc � s z TraversableResources.contentsN)
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