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_bootstrap_external.cpython-38.pyc
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One should use importlib as the public-facing version of this module. � NZwin32�\�/c c s | ]}t |�d kV qdS �� N��len��.0�sep� r �5/usr/lib64/python3.8/importlib/_bootstrap_external.py� <genexpr>+ s r � c C s h | ]}d |� ��qS ��:r �r �sr r r � <setcomp>/ s r )�win)�cygwin�darwinc s< t j�t�r0t j�t�r d� nd� � fdd�} ndd� } | S )N� PYTHONCASEOKs PYTHONCASEOKc s � t jkS )�5True if filenames must be checked case-insensitively.)�_os�environr ��keyr r � _relax_case@ s z%_make_relax_case.<locals>._relax_casec S s dS )r Fr r r r r r D s )�sys�platform� startswith�_CASE_INSENSITIVE_PLATFORMS�#_CASE_INSENSITIVE_PLATFORMS_STR_KEY)r r r r �_make_relax_case9 s r# c C s t | �d@ �dd�S )z*Convert a 32-bit integer to little-endian.� �� � �little)�int�to_bytes)�xr r r � _pack_uint32J s r* c C s t | �dkst�t�| d�S )z/Convert 4 bytes in little-endian to an integer.r% r& �r �AssertionErrorr' � from_bytes��datar r r �_unpack_uint32O s r0 c C s t | �dkst�t�| d�S )z/Convert 2 bytes in little-endian to an integer.� r& r+ r. r r r �_unpack_uint16T s r2 c G s� | sdS t | �dkr | d S d}g }ttj| �D ]z\}}|�t�sL|�t�rf|�t�pX|}t | g}q0|�d�r�|� � |� � kr�|}|g}q�|� |� q0|p�|}|� |� q0dd� |D �}t |�dkr�|d s�|t S |t � |� S )� Replacement for os.path.join().r r r r c S s g | ]}|r|� t��qS r ��rstrip�path_separators�r �pr r r � <listcomp>r s � _path_join.<locals>.<listcomp>) r �mapr �_path_splitrootr �path_sep_tuple�endswithr5 r6 �path_sep�casefold�append�join)� path_parts�root�pathZnew_root�tailr r r � _path_join[ s* rG c G s t �dd� | D ��S )r3 c S s g | ]}|r|� t��qS r r4 )r �partr r r r9 { s �r: )r? rB )rC r r r rG y s �c sB t � fdd�tD ��}|dk r&d� fS � d|� � |d d� fS )z Replacement for os.path.split().c 3 s | ]}� � |�V qd S �N)�rfindr7 �rE r r r � s z _path_split.<locals>.<genexpr>r r Nr )�maxr6 )rE �ir rK r � _path_split s rN c C s t �| �S )z~Stat the path. Made a separate function to make it easier to override in experiments (e.g. cache stat results). )r �statrK r r r � _path_stat� s rP c C s2 z t | �}W n tk r" Y dS X |jd@ |kS )z1Test whether the path is the specified mode type.Fi � )rP �OSError�st_mode)rE �mode� stat_infor r r �_path_is_mode_type� s rU c C s t | d�S )z Replacement for os.path.isfile.i � )rU rK r r r � _path_isfile� s rV c C s | s t �� } t| d�S )z Replacement for os.path.isdir.i @ )r �getcwdrU rK r r r � _path_isdir� s rX c C s> | sdS t �| �d �dd�}t|�dko<|�d�p<|�d�S )� Replacement for os.path.isabs.Fr r r r z\\)r r< �replacer r r> )rE rD r r r � _path_isabs� s r[ c C s | � t�S )rY )r r6 rK r r r r[ � s � c C s� d� | t| ��}t�|tjtjB tjB |d@ �}z2t�|d��}|� |� W 5 Q R X t� || � W n: t k r� zt� |� W n t k r� Y nX � Y nX dS )z�Best-effort function to write data to a path atomically. 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Nc sB |d kr| j }n | j |kr0td| j |f |d��� | |f|�|�S )Nz loader for %s cannot handle %s��name)r� � ImportError)�selfr� �args�kwargs��methodr r �_check_name_wrapper s ��z(_check_name.<locals>._check_name_wrapperc S s8 dD ] }t ||�rt| |t||�� q| j�|j� d S )N)� __module__�__name__� __qualname__�__doc__)�hasattr�setattr�getattr�__dict__�update)�new�oldrZ r r r �_wrap s z_check_name.<locals>._wrap)N)� _bootstrapr� � NameError)r� r� r� r r� r � _check_name� s r� c C s< | � |�\}}|dkr8t|�r8d}t�|�|d �t� |S )z�Try to find a loader for the specified module by delegating to self.find_loader(). This method is deprecated in favor of finder.find_spec(). Nz,Not importing directory {}: missing __init__r )� find_loaderr rq rr r_ � ImportWarning)r� �fullname�loader�portions�msgr r r �_find_module_shim s r� c C s� | dd� }|t kr<d|�d|��}t�d|� t|f|��t| �dk rfd|��}t�d|� t|��t| dd� �}|d @ r�d |�d |��}t|f|��|S ) aT Perform basic validity checking of a pyc header and return the flags field, which determines how the pyc should be further validated against the source. *data* is the contents of the pyc file. (Only the first 16 bytes are required, though.) *name* is the name of the module being imported. It is used for logging. *exc_details* is a dictionary passed to ImportError if it raised for improved debugging. ImportError is raised when the magic number is incorrect or when the flags field is invalid. EOFError is raised when the data is found to be truncated. 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An ImportError is raised if the bytecode is stale. r� � r$ zbytecode is stale for r� Nr� )r0 r� r� r� )r/ � source_mtime� source_sizer� r� r� r r r �_validate_timestamp_pycJ s �r� c C s& | dd� |kr"t d|��f|��dS )a� Validate a hash-based pyc by checking the real source hash against the one in the pyc header. *data* is the contents of the pyc file. (Only the first 16 bytes are required.) *source_hash* is the importlib.util.source_hash() of the source file. *name* is the name of the module being imported. It is used for logging. *exc_details* is a dictionary passed to ImportError if it raised for improved debugging. An ImportError is raised if the bytecode is stale. r� r� z.hash in bytecode doesn't match hash of source N)r� )r/ � source_hashr� r� r r r �_validate_hash_pycf s ��r� c C sP t �| �}t|t�r8t�d|� |dk r4t�||� |S td� |�||d��dS )z#Compile bytecode as found in a pyc.zcode object from {!r}NzNon-code object in {!r}�r� rE ) �marshal�loads� isinstance� _code_typer� r� �_imp�_fix_co_filenamer� r_ )r/ r� r� r� �coder r r �_compile_bytecode~ s �r� c C sF t t�}|�td�� |�t|�� |�t|�� |�t�| �� |S )z+Produce the data for a timestamp-based pyc.r )� bytearrayr� �extendr* r� �dumps)r� �mtimer� r/ r r r �_code_to_timestamp_pyc� s r� Tc C sP t t�}d|d> B }|�t|�� t|�dks2t�|�|� |�t�| �� |S )z&Produce the data for a hash-based pyc.r r� )r� r� r� r* r r, r� r� )r� r� �checkedr/ rz r r r �_code_to_hash_pyc� s r� c C s> ddl }t�| �j}|�|�}t�dd�}|�| �|d ��S )zyDecode bytes representing source code and return the string. 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Nz <unknown>� get_filename��originT� is_packager )r� r� r� r ru r� � ModuleSpec� _set_fileattr�_get_supported_file_loadersr> r� r� � _POPULATEr� r� rN rA ) r� �locationr� r� �spec� loader_class�suffixesr� �dirnamer r r �spec_from_file_location� s> r c @ sP e Zd ZdZdZdZdZedd� �Zedd� �Z edd d ��Z edd d ��Z d S )�WindowsRegistryFinderz>Meta path finder for modules declared in the Windows registry.z;Software\Python\PythonCore\{sys_version}\Modules\{fullname}zASoftware\Python\PythonCore\{sys_version}\Modules\{fullname}\DebugFc C s8 zt �t j|�W S tk r2 t �t j|� Y S X d S rI )�_winreg�OpenKey�HKEY_CURRENT_USERrQ �HKEY_LOCAL_MACHINE)�clsr r r r �_open_registry s z$WindowsRegistryFinder._open_registryc C sr | j r| j}n| j}|j|dtjd d� d�}z&| �|��}t�|d�}W 5 Q R X W n t k rl Y d S X |S )Nz%d.%dr1 )r� � sys_versionr ) � DEBUG_BUILD�REGISTRY_KEY_DEBUG� REGISTRY_KEYr_ r � version_infor r � QueryValuerQ )r r� � registry_keyr �hkey�filepathr r r �_search_registry s � z&WindowsRegistryFinder._search_registryNc C sz | � |�}|d krd S z t|� W n tk r8 Y d S X t� D ]4\}}|�t|��r@tj||||�|d�}| S q@d S )Nr� )r rP rQ r� r> r� r� �spec_from_loader)r r� rE �targetr r� r� r� r r r � find_spec s �z WindowsRegistryFinder.find_specc C s" | � ||�}|dk r|jS dS dS )zlFind module named in the registry. 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N�r r� �r r� rE r� r r r � find_module' s z!WindowsRegistryFinder.find_module)NN)N) r� r� r� r� r r r � classmethodr r r r r r r r r � s �� r c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) � _LoaderBasicszSBase class of common code needed by both SourceLoader and SourcelessFileLoader.c C s@ t | �|��d }|�dd�d }|�d�d }|dko>|dkS )z�Concrete implementation of InspectLoader.is_package by checking if the path returned by get_filename has a filename of '__init__.py'.r ro r r1 �__init__)rN r� r� rv )r� r� r� � filename_base� tail_namer r r r� : s z_LoaderBasics.is_packagec C s dS �z*Use default semantics for module creation.Nr �r� r� r r r � create_moduleB s z_LoaderBasics.create_modulec C s8 | � |j�}|dkr$td�|j���t�t||j� dS )zExecute the module.Nz4cannot load module {!r} when get_code() returns None)�get_coder� r� r_ r� �_call_with_frames_removed�execr� )r� �moduler� r r r � exec_moduleE s �z_LoaderBasics.exec_modulec C s t �| |�S )zThis module is deprecated.)r� �_load_module_shim�r� r� r r r � load_moduleM s z_LoaderBasics.load_moduleN)r� r� r� r� r� r r% r( r r r r r 5 s r c @ sJ e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zd d �d d�Zdd� Z dS )� SourceLoaderc C s t �dS )z�Optional method that returns the modification time (an int) for the specified path (a str). 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Nr )r� rE r/ r r r r- t s zSourceLoader.set_datac C sR | � |�}z| �|�}W n0 tk rH } ztd|d�|�W 5 d}~X Y nX t|�S )z4Concrete implementation of InspectLoader.get_source.z'source not available through get_data()r� N)r� �get_datarQ r� r� )r� r� rE r� �excr r r � get_source{ s ��zSourceLoader.get_sourcer� )� _optimizec C s t jt||dd|d�S )z�Return the code object compiled from source. The 'data' argument can be any object type that compile() supports. r# T)� dont_inheritr{ )r� r" �compile)r� r/ rE r3 r r r �source_to_code� s �zSourceLoader.source_to_codec C s" | � |�}d}d}d}d}d}z t|�}W n tk rD d}Y �n0X z| �|�} W n tk rj Y �n X t| d �}z| �|�} W n tk r� Y n�X ||d�} z�t| || �} t| �dd� } | d@ dk}|�r$| d @ dk}t j d k�r8|s�t j d k�r8| �|�}t � t |�}t | ||| � nt| || d || � W n ttfk �rT Y n X t�d ||� t| |||d�S |dk�r�| �|�}| �||�}t�d|� tj�s |dk �r |dk �r |�r�|dk�r�t � |�}t|||�} nt||t|��} z| �||| � W n tk �r Y nX |S )z�Concrete implementation of InspectLoader.get_code. Reading of bytecode requires path_stats to be implemented. To write bytecode, set_data must also be implemented. NFTr� r� r� r r r1 �never�always�sizez {} matches {})r� r� r� zcode object from {})r� r� ry r, rQ r' r0 r� � memoryviewr� �check_hash_based_pycsr� �_RAW_MAGIC_NUMBERr� r� r� r� r� r� r� r6 r �dont_write_bytecoder� r� r r/ )r� r� r� r� r� r� � hash_based� check_sourcer� �str/ r� rz � bytes_data� code_objectr r r r! � s� � �� ����� � �zSourceLoader.get_codeN) r� r� r� r+ r, r/ r- r2 r6 r! r r r r r) R s r) c s| e Zd ZdZdd� Zdd� Zdd� Ze� fdd ��Zed d � �Z d d � Z edd� �Z dd� Z dd� Z dd� Zdd� Z� ZS )� FileLoaderzgBase file loader class which implements the loader protocol methods that require file system usage.c C s || _ || _dS )zKCache the module name and the path to the file found by the finder.Nr� )r� r� rE r r r r � s zFileLoader.__init__c C s | j |j ko| j|jkS rI �� __class__r� �r� �otherr r r �__eq__� s �zFileLoader.__eq__c C s t | j�t | j�A S rI ��hashr� rE �r� r r r �__hash__� s zFileLoader.__hash__c s t t| ��|�S )zdLoad a module from a file. This method is deprecated. Use exec_module() instead. )�superrC r( r' �rE r r r( � s zFileLoader.load_modulec C s | j S �z:Return the path to the source file as found by the finder.rK r' r r r r� s zFileLoader.get_filenamec C sf t | ttf�r:t�t|���}|�� W 5 Q R � S Q R X n(t�|d��}|�� W 5 Q R � S Q R X dS )z'Return the data from path as raw bytes.�rN)r� r) �ExtensionFileLoaderre � open_coder| �readrf )r� rE rk r r r r0 s zFileLoader.get_datac C s | � |�r| S d S rI )r� �r� r$ r r r �get_resource_reader s z FileLoader.get_resource_readerc C s t t| j�d |�}t�|d�S )Nr rP )rG rN rE re rf �r� �resourcerE r r r � open_resource s zFileLoader.open_resourcec C s& | � |�st�tt| j�d |�}|S �Nr )� is_resource�FileNotFoundErrorrG rN rE rV r r r � resource_path s zFileLoader.resource_pathc C s( t |kr dS tt| j�d |�}t|�S )NFr )r? rG rN rE rV �r� r� rE r r r rZ s zFileLoader.is_resourcec C s t t�t| j�d ��S rY )�iterr �listdirrN rE rK r r r �contents& s zFileLoader.contents)r� r� r� r� r rH rL r� r( r� r0 rU rX r\ rZ r` � __classcell__r r rN r rC � s rC c @ s. e Zd ZdZdd� Zdd� Zdd�dd �Zd S ) �SourceFileLoaderz>Concrete implementation of SourceLoader using the file system.c C s t |�}|j|jd�S )z!Return the metadata for the path.)r� r9 )rP �st_mtime�st_size)r� rE r@ r r r r, . s zSourceFileLoader.path_statsc C s t |�}| j|||d�S )N��_mode)r� r- )r� r� r� r/ rS r r r r/ 3 s z SourceFileLoader._cache_bytecoder\ re c C s� t |�\}}g }|r4t|�s4t |�\}}|�|� qt|�D ]l}t||�}zt�|� W q< tk rp Y q<Y q< tk r� } zt � d||� W Y � dS d}~X Y q<X q<z t |||� t � d|� W n0 tk r� } zt � d||� W 5 d}~X Y nX dS )zWrite bytes data to a file.zcould not create {!r}: {!r}Nz created {!r}) rN rX rA �reversedrG r �mkdir�FileExistsErrorrQ r� r� rl ) r� rE r/ rf �parentr� rC rH r1 r r r r- 8 s0 � �zSourceFileLoader.set_dataN)r� r� r� r� r, r/ r- r r r r rb * s rb c @ s e Zd ZdZdd� Zdd� ZdS )�SourcelessFileLoaderz-Loader which handles sourceless file imports.c C sD | � |�}| �|�}||d�}t|||� tt|�dd � ||d�S )Nr� r� )r� r� )r� r0 r� r� r: )r� r� rE r/ r� r r r r! [ s � �z SourcelessFileLoader.get_codec C s dS )z'Return None as there is no source code.Nr r' r r r r2 k s z SourcelessFileLoader.get_sourceN)r� r� r� r� r! r2 r r r r rk W s rk c @ s\ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z e dd� �Z dS )rQ z]Loader for extension modules. The constructor is designed to work with FileFinder. c C s@ || _ t|�s6ztt�� |�}W n tk r4 Y nX || _d S rI )r� r[ rG r rW rQ rE r] r r r r | s z ExtensionFileLoader.__init__c C s | j |j ko| j|jkS rI rD rF r r r rH � s �zExtensionFileLoader.__eq__c C s t | j�t | j�A S rI rI rK r r r rL � s z ExtensionFileLoader.__hash__c C s$ t �tj|�}t �d|j| j� |S )z&Create an unitialized extension modulez&extension module {!r} loaded from {!r})r� r" r� �create_dynamicr� r� rE )r� r� r$ r r r r � s � �z!ExtensionFileLoader.create_modulec C s$ t �tj|� t �d| j| j� dS )z Initialize an extension modulez(extension module {!r} executed from {!r}N)r� r" r� � exec_dynamicr� r� rE rT r r r r% � s �z ExtensionFileLoader.exec_modulec s$ t | j�d � t� fdd�tD ��S )z1Return True if the extension module is a package.r c 3 s | ]}� d | kV qdS )r Nr �r �suffix�� file_namer r r � s �z1ExtensionFileLoader.is_package.<locals>.<genexpr>)rN rE �any�EXTENSION_SUFFIXESr' r rp r r� � s �z ExtensionFileLoader.is_packagec C s dS )z?Return None as an extension module cannot create a code object.Nr r' r r r r! � s z ExtensionFileLoader.get_codec C s dS )z5Return None as extension modules have no source code.Nr r' r r r r2 � s z ExtensionFileLoader.get_sourcec C s | j S rO rK r' r r r r� � s z ExtensionFileLoader.get_filenameN)r� r� r� r� r rH rL r r% r� r! r2 r� r� r r r r rQ t s rQ c @ sh e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z dd� Z dd� Z dd� ZdS )�_NamespacePatha& Represents a namespace package's path. It uses the module name to find its parent module, and from there it looks up the parent's __path__. When this changes, the module's own path is recomputed, using path_finder. For top-level modules, the parent module's path is sys.path.c C s$ || _ || _t| �� �| _|| _d S rI )�_name�_pathr� �_get_parent_path�_last_parent_path� _path_finder�r� r� rE � path_finderr r r r � s z_NamespacePath.__init__c C s& | j �d�\}}}|dkr dS |dfS )z>Returns a tuple of (parent-module-name, parent-path-attr-name)ro r )r rE �__path__)ru rv )r� rj �dot�mer r r �_find_parent_path_names� s z&_NamespacePath._find_parent_path_namesc C s | � � \}}ttj| |�S rI )r r� r �modules)r� �parent_module_name�path_attr_namer r r rw � s z _NamespacePath._get_parent_pathc C sP t | �� �}|| jkrJ| �| j|�}|d k rD|jd krD|jrD|j| _|| _| jS rI )r� rw rx ry ru r� r� rv )r� � parent_pathr� r r r � _recalculate� s z_NamespacePath._recalculatec C s t | �� �S rI )r^ r� rK r r r �__iter__� s z_NamespacePath.__iter__c C s | � � | S rI �r� )r� �indexr r r � __getitem__� s z_NamespacePath.__getitem__c C s || j |< d S rI )rv )r� r� rE r r r � __setitem__� s z_NamespacePath.__setitem__c C s t | �� �S rI )r r� rK r r r �__len__� s z_NamespacePath.__len__c C s d� | j�S )Nz_NamespacePath({!r}))r_ rv rK r r r �__repr__� s z_NamespacePath.__repr__c C s || � � kS rI r� �r� �itemr r r � __contains__� s z_NamespacePath.__contains__c C s | j �|� d S rI )rv rA r� r r r rA � s z_NamespacePath.appendN)r� r� r� r� r r rw r� r� r� r� r� r� r� rA r r r r rt � s rt c @ sP e Zd Zdd� Zedd� �Zdd� Zdd� Zd d � Zd d � Z d d� Z dd� Z dS )�_NamespaceLoaderc C s t |||�| _d S rI )rt rv rz r r r r � s z_NamespaceLoader.__init__c C s d� |j�S )zsReturn repr for the module. The method is deprecated. The import machinery does the job itself. z<module {!r} (namespace)>)r_ r� )r r$ r r r � module_repr� s z _NamespaceLoader.module_reprc C s dS )NTr r' r r r r� � s z_NamespaceLoader.is_packagec C s dS )Nr r r' r r r r2 � s z_NamespaceLoader.get_sourcec C s t ddddd�S )Nr z<string>r# T)r4 )r5 r' r r r r! s z_NamespaceLoader.get_codec C s dS r r r r r r r s z _NamespaceLoader.create_modulec C s d S rI r rT r r r r% s z _NamespaceLoader.exec_modulec C s t �d| j� t �| |�S )zbLoad a namespace module. This method is deprecated. Use exec_module() instead. z&namespace module loaded with path {!r})r� r� rv r& r' r r r r( s �z _NamespaceLoader.load_moduleN) r� r� r� r r r� r� r2 r! r r% r( r r r r r� � s r� c @ sv e Zd ZdZedd� �Zedd� �Zedd� �Zedd � �Zedd d ��Z edd d��Z eddd��Z edd� �Z d S )� PathFinderz>Meta path finder for sys.path and package __path__ attributes.c C s@ t tj�� �D ],\}}|dkr(tj|= qt|d�r|�� qdS )z}Call the invalidate_caches() method on all path entry finders stored in sys.path_importer_caches (where implemented).N�invalidate_caches)�listr �path_importer_cache�itemsr� r� )r r� �finderr r r r� s z PathFinder.invalidate_cachesc C sT t jdk r t js t�dt� t jD ],}z||�W S tk rL Y q"Y q"X q"dS )z.Search sys.path_hooks for a finder for 'path'.Nzsys.path_hooks is empty)r � path_hooksrq rr r� r� )r rE �hookr r r � _path_hooks% s zPathFinder._path_hooksc C sh |dkr,z t �� }W n tk r* Y dS X ztj| }W n( tk rb | �|�}|tj|< Y nX |S )z�Get the finder for the path entry from sys.path_importer_cache. If the path entry is not in the cache, find the appropriate finder and cache it. If no finder is available, store None. r N)r rW r[ r r� �KeyErrorr� )r rE r� r r r �_path_importer_cache2 s z PathFinder._path_importer_cachec C sR t |d�r|�|�\}}n|�|�}g }|d k r<t�||�S t�|d �}||_|S )Nr� )r� r� r r� r r� r� )r r� r� r� r� r� r r r �_legacy_get_specH s zPathFinder._legacy_get_specNc C s� g }|D ]�}t |ttf�s q| �|�}|dk rt|d�rF|�||�}n | �||�}|dkr\q|jdk rn| S |j}|dkr�t d��|� |� qt � |d�}||_|S )z?Find the loader or namespace_path for this module/package name.Nr zspec missing loader) r� r| �bytesr� r� r r� r� r� r� r� r� r� ) r r� rE r �namespace_path�entryr� r� r� r r r � _get_specW s( zPathFinder._get_specc C sd |dkrt j}| �|||�}|dkr(dS |jdkr\|j}|rVd|_t||| j�|_|S dS n|S dS )z�Try to find a spec for 'fullname' on sys.path or 'path'. The search is based on sys.path_hooks and sys.path_importer_cache. N)r rE r� r� r� r� rt )r r� rE r r� r� r r r r w s zPathFinder.find_specc C s | � ||�}|dkrdS |jS )z�find the module on sys.path or 'path' based on sys.path_hooks and sys.path_importer_cache. This method is deprecated. Use find_spec() instead. Nr r r r r r � s zPathFinder.find_modulec O s ddl m} |j||�S )a Find distributions. Return an iterable of all Distribution instances capable of loading the metadata for packages matching ``context.name`` (or all names if ``None`` indicated) along the paths in the list of directories ``context.path``. r )�MetadataPathFinder)�importlib.metadatar� �find_distributions)r r� r� r� r r r r� � s z PathFinder.find_distributions)N)NN)N) r� r� r� r� r r� r� r� r� r� r r r� r r r r r� s" r� c @ sZ e Zd ZdZdd� Zdd� ZeZdd� Zdd � Z dd d �Z d d� Z e dd� �Z dd� Zd S )� FileFinderz�File-based finder. Interactions with the file system are cached for performance, being refreshed when the directory the finder is handling has been modified. c sp g }|D ] \� }|� � fdd�|D �� q|| _|p6d| _t| j�sVtt�� | j�| _d| _t� | _ t� | _ dS )z�Initialize with the path to search on and a variable number of 2-tuples containing the loader and the file suffixes the loader recognizes.c 3 s | ]}|� fV qd S rI r rn �r� r r r � s z&FileFinder.__init__.<locals>.<genexpr>ro r� N) r� �_loadersrE r[ rG r rW � _path_mtime�set� _path_cache�_relaxed_path_cache)r� rE �loader_details�loadersr� r r� r r � s zFileFinder.__init__c C s d| _ dS )z Invalidate the directory mtime.r� N)r� rK r r r r� � s z FileFinder.invalidate_cachesc C s* | � |�}|dkrdg fS |j|jp&g fS )z�Try to find a loader for the specified module, or the namespace package portions. Returns (loader, list-of-portions). This method is deprecated. Use find_spec() instead. N)r r� r� )r� r� r� r r r r� � s zFileFinder.find_loaderc C s |||�}t ||||d�S )Nr� )r )r� r� r� rE �smslr r� r r r r� � s �zFileFinder._get_specNc C s� d}|� d�d }zt| jp"t�� �j}W n tk rB d}Y nX || jkr\| �� || _t � rr| j }|� � }n | j }|}||kr�t | j|�}| jD ]:\} } d| } t || �} t| �r�| �| || |g|� S q�t|�}| jD ]r\} } zt | j|| �} W n tk �r Y dS X tjd| dd� || |kr�t| �r�| �| || d|� S q�|�r~t�d |� t�|d�} |g| _| S dS ) zoTry to find a spec for the specified module. Returns the matching spec, or None if not found. Fro r1 r� r Nz trying {})� verbosityzpossible namespace for {})rv rP rE r rW rc rQ r� � _fill_cacher r� r� r� rG r� rV r� rX r~ r� r� r� r� )r� r� r � is_namespace� tail_moduler� �cache� cache_module� base_pathro r� � init_filename� full_pathr� r r r r � sP � zFileFinder.find_specc C s� | j }zt�|pt�� �}W n tttfk r: g }Y nX tj� d�sTt |�| _ nJt � }|D ]8}|� d�\}}}|r�d� ||�� �}n|}|�|� q^|| _ tj� t�r�dd� |D �| _dS )zDFill the cache of potential modules and packages for this directory.r ro r] c S s h | ] }|� � �qS r )r� )r �fnr r r r * s z)FileFinder._fill_cache.<locals>.<setcomp>N)rE r r_ rW r[ �PermissionError�NotADirectoryErrorr r r r� r� r� r_ r� �addr! r� ) r� rE r` �lower_suffix_contentsr� r� r} ro �new_namer r r r� s" zFileFinder._fill_cachec s � �fdd�}|S )a A class method which returns a closure to use on sys.path_hook which will return an instance using the specified loaders and the path called on the closure. If the path called on the closure is not a directory, ImportError is raised. c s" t | �std| d��� | f��� S )z-Path hook for importlib.machinery.FileFinder.z only directories are supportedrK )rX r� rK �r r� r r �path_hook_for_FileFinder6 s z6FileFinder.path_hook.<locals>.path_hook_for_FileFinderr )r r� r� r r� r � path_hook, s zFileFinder.path_hookc C s d� | j�S )NzFileFinder({!r}))r_ rE rK r r r r� > s zFileFinder.__repr__)N)r� r� r� r� r r� r� r r� r� r r� r r� r� r r r r r� � s 3 r� c C s� | � d�}| � d�}|sB|r$|j}n ||kr8t||�}n t||�}|sTt|||d�}z$|| d< || d< || d< || d< W n tk r� Y nX d S )N� __loader__�__spec__r� �__file__� __cached__)�getr� rk rb r � Exception)�nsr� �pathname� cpathnamer� r� r r r �_fix_up_moduleD s" r� c C s* t tt�� �f} ttf}ttf}| ||gS )z_Returns a list of file-based module loaders. Each item is a tuple (loader, suffixes). )rQ �_alternative_architecturesr� �extension_suffixesrb r� rk r� )� extensions�source�bytecoder r r r� [ s r� c C s� | a t jat jatjt }dD ]0}|tjkr8t �|�}n tj| }t|||� q ddgfdddgff}|D ]n\}}tdd� |D ��s�t�|d }|tjkr�tj| } q�qjzt �|�}W q�W qj t k r� Y qjY qjX qjt d ��t|d |� t|d |� t|d d � |�� t|ddd� |D �� t �d�} t|d| � t �d�} t|d| � |dk�rnt �d�} t|d| � t|dt � � t � tt�� �� |dk�r�t�d� dt k�r�dt_dS )z�Setup the path-based importers for importlib by importing needed built-in modules and injecting them into the global namespace. Other components are extracted from the core bootstrap module. )re rq �builtinsr� �posixr �ntr c s s | ]}t |�d kV qdS r r r r r r r s z_setup.<locals>.<genexpr>r z importlib requires posix or ntr r? r6 r �_pathseps_with_colonc S s h | ]}d |� ��qS r r r r r r r � s z_setup.<locals>.<setcomp>�_thread�_weakref�winregr r z.pywz_d.pydTN)r� r r� r� r� �_builtin_from_namer� �allr, r� rB r# rs r� r� r� r� rA r r ) �_bootstrap_module� self_module� builtin_name�builtin_module� os_details� builtin_osr6 r? � os_module� thread_module�weakref_module� winreg_moduler r r �_setupf sN r� c C s2 t | � t� }tj�tj|� g� tj�t � dS )z)Install the path-based import components.N) r� r� r r� r� r� r� � meta_pathrA r� )r� �supported_loadersr r r �_install� s r� �-arm-linux-gnueabihf.�-armeb-linux-gnueabihf.�-mips64-linux-gnuabi64.�-mips64el-linux-gnuabi64.�-powerpc-linux-gnu.�-powerpc-linux-gnuspe.�-powerpc64-linux-gnu.�-powerpc64le-linux-gnu.�-arm-linux-gnueabi.�-armeb-linux-gnueabi.�-mips64-linux-gnu.�-mips64el-linux-gnu.�-ppc-linux-gnu.�-ppc-linux-gnuspe.�-ppc64-linux-gnu.�-ppc64le-linux-gnu.)r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� c C sF | D ]<}t �� D ].\}}||kr| �|�||�� | S qq| S )z�Add a suffix with an alternative architecture name to the list of suffixes so an extension built with the default (upstream) setting is loadable with our Pythons )� _ARCH_MAPr� rA rZ )r� ro �original� alternativer r r r� � s r� )r\ )N)NNN)r r )T)N)N)Tr� r� re r rq r� r � _MS_WINDOWSr� r r� r� r6 r� r, r? r� r= rB r� r" �%_CASE_INSENSITIVE_PLATFORMS_BYTES_KEYr! r# r* r0 r2 rG rN rP rU rV rX r[ rl �type�__code__r� r( r� r' r- r< r� r r� r� �DEBUG_BYTECODE_SUFFIXES�OPTIMIZED_BYTECODE_SUFFIXESr� r� r� r� r� r� r� r� r� r� r� r� r� r� �objectr� r r r r) rC rb rk rs rQ rt r� r� r� r� r� r� r� r� r� r r r r �<module> s� � G( ! � D@ H-:?* A �
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