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Editing: _bootstrap_external.cpython-37.pyc
B � f�� � @ s d Z dZdZee Zdd� Zdd� Zdd� Zd d � Zd d � Zd d� Z dd� Z dd� Z dd� Z dadd�Z ee j�Zd�dd�d Ze�ed�Zd Zd Zd gZd gZe ZZdbd d!�d"d#�Z d$d%� Z d&d'� Z d(d)� Z d*d+� Z d,d-� Z!d.d/� Z"d0d1� Z#d2d3� Z$d4d5� Z%dcd6d7�Z&ddd9d:�Z'ded<d=�Z(d>d?� Z)e*� Z+dfd e+d@�dAdB�Z,G dCdD� dD�Z-G dEdF� dF�Z.G dGdH� dHe.�Z/G dIdJ� dJ�Z0G dKdL� dLe0e/�Z1G dMdN� dNe0e.�Z2g Z3G dOdP� dPe0e.�Z4G dQdR� dR�Z5G dSdT� dT�Z6G dUdV� dV�Z7G dWdX� dX�Z8dgdYdZ�Z9d[d\� Z:d]d^� Z;d_d`� Z<d S )ha^ Core implementation of path-based import. This module is NOT meant to be directly imported! It has been designed such that it can be bootstrapped into Python as the implementation of import. As such it requires the injection of specific modules and attributes in order to work. One should use importlib as the public-facing version of this module. )�win)�cygwin�darwinc s< t j�t�r0t j�t�r d� nd� � fdd�} ndd� } | S )N� PYTHONCASEOKs PYTHONCASEOKc s � t jkS )z5True if filenames must be checked case-insensitively.)�_os�environ� )�keyr �B/opt/alt/python37/lib64/python3.7/importlib/_bootstrap_external.py� _relax_case$ s z%_make_relax_case.<locals>._relax_casec S s dS )z5True if filenames must be checked case-insensitively.Fr r r r r r ( s )�sys�platform� startswith�_CASE_INSENSITIVE_PLATFORMS�#_CASE_INSENSITIVE_PLATFORMS_STR_KEY)r r )r r �_make_relax_case s r c C s t | �d@ �dd�S )z*Convert a 32-bit integer to little-endian.l �� � �little)�int�to_bytes)�xr r r �_w_long. s r c C s t �| d�S )z/Convert 4 bytes in little-endian to an integer.r )r � from_bytes)� int_bytesr r r �_r_long3 s r c G s t �dd� | D ��S )z Replacement for os.path.join().c S s g | ]}|r|� t��qS r )�rstrip�path_separators)�.0�partr r r � <listcomp>: s z _path_join.<locals>.<listcomp>)�path_sep�join)� path_partsr r r � _path_join8 s r" c C s` t t�dkr$| �t�\}}}||fS x2t| �D ]&}|tkr.| j|dd�\}}||fS q.W d| fS )z Replacement for os.path.split().� )�maxsplit� )�lenr � rpartitionr �reversed�rsplit)�path�front�_�tailr r r r � _path_split> s r. 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 �stat)r* r r r � _path_statJ s r0 c C s0 y t | �}W n tk r dS X |jd@ |kS )z1Test whether the path is the specified mode type.Fi � )r0 �OSError�st_mode)r* �mode� stat_infor r r �_path_is_mode_typeT s r5 c C s t | d�S )z Replacement for os.path.isfile.i � )r5 )r* r r r � _path_isfile] s r6 c C s | s t �� } t| d�S )z Replacement for os.path.isdir.i @ )r �getcwdr5 )r* r r r � _path_isdirb s r8 � c C s� d� | t| ��}t�|tjtjB tjB |d@ �}y2t�|d��}|� |� W dQ R X t� || � W n: t k r� yt� |� W n t k r� Y nX � Y nX dS )z�Best-effort function to write data to a path atomically. Be prepared to handle a FileExistsError if concurrent writing of the temporary file is attempted.z{}.{}i� �wbN) �format�idr �open�O_EXCL�O_CREAT�O_WRONLY�_io�FileIO�write�replacer1 �unlink)r* �datar3 �path_tmp�fd�filer r r � _write_atomici s rJ iB � r s � __pycache__zopt-z.pyz.pycN)� optimizationc C s� |dk r4t �dt� |dk r(d}t|��|r0dnd}t�| �} t| �\}}|�d�\}}}tj j } | dkrrt d��d� |r~|n||| g�} |dkr�tj jdkr�d}ntj j}t|�}|dkr�|�� s�td �|���d �| t|�} t|t| td �S ) a� Given the path to a .py file, return the path to its .pyc file. The .py file does not need to exist; this simply returns the path to the .pyc file calculated as if the .py file were imported. The 'optimization' parameter controls the presumed optimization level of the bytecode file. If 'optimization' is not None, the string representation of the argument is taken and verified to be alphanumeric (else ValueError is raised). The debug_override parameter is deprecated. If debug_override is not None, a True value is the same as setting 'optimization' to the empty string while a False value is equivalent to setting 'optimization' to '1'. If sys.implementation.cache_tag is None then NotImplementedError is raised. NzFthe debug_override parameter is deprecated; use 'optimization' insteadz2debug_override or optimization must be set to Noner% r# �.z$sys.implementation.cache_tag is None� z{!r} is not alphanumericz{}.{}{})� _warnings�warn�DeprecationWarning� TypeErrorr �fspathr. r' r �implementation� cache_tag�NotImplementedErrorr �flags�optimize�str�isalnum� ValueErrorr; �_OPTr" �_PYCACHE�BYTECODE_SUFFIXES) r* �debug_overriderM �message�headr- �base�sep�rest�tag�almost_filenamer r r �cache_from_source s0 rh c C s� t jjdkrtd��t�| �} t| �\}}t|�\}}|tkrNtd� t| ���|� d�}|dkrptd� |���nV|dkr�|� dd�d }|� t �s�td � t ���|tt �d� }|�� s�td � |���|�d�d }t||td �S ) an Given the path to a .pyc. file, return the path to its .py file. The .pyc file does not need to exist; this simply returns the path to the .py file calculated to correspond to the .pyc file. If path does not conform to PEP 3147/488 format, ValueError will be raised. If sys.implementation.cache_tag is None then NotImplementedError is raised. Nz$sys.implementation.cache_tag is Nonez%{} not bottom-level directory in {!r}rN > rK � z!expected only 2 or 3 dots in {!r}ri rK ���z9optimization portion of filename does not start with {!r}z4optimization level {!r} is not an alphanumeric valuerO )r rU rV rW r rT r. r^ r\ r; �countr) r r] r& r[ � partitionr" �SOURCE_SUFFIXES)r* rb �pycache_filename�pycache� dot_countrM � opt_level� base_filenamer r r �source_from_cache< s. rs c C s~ t | �dkrdS | �d�\}}}|r8|�� dd� dkr<| S y t| �}W n$ ttfk rl | dd� }Y nX t|�rz|S | S )z�Convert a bytecode file path to a source path (if possible). This function exists purely for backwards-compatibility for PyImport_ExecCodeModuleWithFilenames() in the C API. rO NrN �������py)r& r' �lowerrs rW r\ r6 )� bytecode_pathre r, � extension� source_pathr r r �_get_sourcefile^ s r{ c C sH | � tt��r.yt| �S tk r* Y qDX n| � tt��r@| S d S d S )N)�endswith�tuplerm rh rW r_ )�filenamer r r � _get_cachedq s r c C s4 yt | �j}W n tk r& d}Y nX |dO }|S )z3Calculate the mode permissions for a bytecode file.i� � )r0 r2 r1 )r* r3 r r r � _calc_mode} s r� c sD d� fdd� }y t j}W n tk r4 dd� }Y nX ||� � |S )z�Decorator to verify that the module being requested matches the one the loader can handle. The first argument (self) must define _name which the second argument is compared against. If the comparison fails then ImportError is raised. 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 s< x(dD ] }t ||�rt| |t||�� qW | j�|j� d S )N)� __module__�__name__� __qualname__�__doc__)�hasattr�setattr�getattr�__dict__�update)�new�oldrD 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__rO )� find_loaderr& rP rQ 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. Nr zbad magic number in z: z{}� z(reached EOF while reading pyc header of � ���zinvalid flags z in )� MAGIC_NUMBERr� �_verbose_messager� r& �EOFErrorr )rF r� � exc_details�magicra rX r r r � _classify_pyc� s r� c C sp t | dd� �|d@ kr:d|��}t�d|� t|f|��|dk rlt | dd� �|d@ krltd|��f|��dS )a Validate a pyc against the source last-modified time. *data* is the contents of the pyc file. (Only the first 16 bytes are required.) *source_mtime* is the last modified timestamp of the source file. *source_size* is None or the size of the source file in bytes. *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� � l �� zbytecode is stale for z{}Nr� )r r� r� r� )rF � source_mtime� source_sizer� r� ra r r r �_validate_timestamp_pyc� 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� )rF � source_hashr� r� r r r �_validate_hash_pyc� 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� r* ) �marshal�loads� isinstance� _code_typer� r� �_imp�_fix_co_filenamer� r; )rF r� rx rz �coder r r �_compile_bytecode s r� rO c C sF t t�}|�td�� |�t|�� |�t|�� |�t�| �� |S )z+Produce the data for a timestamp-based pyc.rO )� bytearrayr� �extendr r� �dumps)r� �mtimer� rF 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& �AssertionErrorr� r� )r� r� �checkedrF rX 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. Universal newline support is used in the decoding. rO NT)�tokenizerA �BytesIO�readline�detect_encoding�IncrementalNewlineDecoder�decode)� source_bytesr� �source_bytes_readline�encoding�newline_decoderr r r � decode_source- s r� )r� �submodule_search_locationsc C s |dkr<d}t |d�rFy|�| �}W qF tk r8 Y qFX n t�|�}tj| ||d�}d|_|dkr�x6t� D ](\}}|� t |��rl|| |�}||_ P qlW dS |t kr�t |d�r�y|� | �}W n tk r� Y q�X |r�g |_n||_|jg k�r|�rt|�d }|j�|� |S )a= Return a module spec based on a file location. To indicate that the module is a package, set submodule_search_locations to a list of directory paths. An empty list is sufficient, though its not otherwise useful to the import system. The loader must take a spec as its only __init__() arg. Nz <unknown>� get_filename)�originT� is_packagerO )r� r� r� r rT r� � ModuleSpec� _set_fileattr�_get_supported_file_loadersr| r} r� � _POPULATEr� r� r. �append) 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 s2 yt �t j|�S tk r, t �t j|�S X d S )N)�_winreg�OpenKey�HKEY_CURRENT_USERr1 �HKEY_LOCAL_MACHINE)�clsr r r r �_open_registry� s z$WindowsRegistryFinder._open_registryc C sp | j r| j}n| j}|j|dtjd d� d�}y&| �|��}t�|d�}W d Q R X W n t k rj d S X |S )Nz%d.%drK )r� � sys_versionr% ) � DEBUG_BUILD�REGISTRY_KEY_DEBUG� REGISTRY_KEYr; r � version_infor� r� � QueryValuer1 )r� r� � registry_keyr �hkey�filepathr r r �_search_registry� s z&WindowsRegistryFinder._search_registryNc C sx | � |�}|d krd S y t|� W n tk r6 d S X x:t� D ]0\}}|�t|��r@tj||||�|d�}|S q@W d S )N)r� )r� r0 r1 r� r| r} r� �spec_from_loader)r� r� r* �targetr� r� r� r� r r r � find_spec� s z WindowsRegistryFinder.find_specc C s" | � ||�}|dk r|jS dS dS )zlFind module named in the registry. 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N)r� r� )r� r� r* r� r r r � find_module� s z!WindowsRegistryFinder.find_module)NN)N) r� r� r� r� r� r� r� � classmethodr� r� r� r� r r r r r� � s r� c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) � _LoaderBasicszSBase class of common code needed by both SourceLoader and SourcelessFileLoader.c C s@ t | �|��d }|�dd�d }|�d�d }|dko>|dkS )z�Concrete implementation of InspectLoader.is_package by checking if the path returned by get_filename has a filename of '__init__.py'.r# rN rO rK �__init__)r. r� r) r' )r� r� r~ � filename_base� tail_namer r r r� � s z_LoaderBasics.is_packagec C s dS )z*Use default semantics for module creation.Nr )r� r� r r r � create_module� s z_LoaderBasics.create_modulec C s8 | � |j�}|dkr$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_module� s z_LoaderBasics.exec_modulec C s t �| |�S )zThis module is deprecated.)r� �_load_module_shim)r� r� r r r � load_module� s z_LoaderBasics.load_moduleN)r� r� r� r� r� r� r� r� r r r r r� � 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, where path is a str. Raises OSError when the path cannot be handled. N)r1 )r� r* r r r � path_mtime� s zSourceLoader.path_mtimec C s d| � |�iS )a� Optional method returning a metadata dict for the specified path to by the path (str). Possible keys: - 'mtime' (mandatory) is the numeric timestamp of last source code modification; - 'size' (optional) is the size in bytes of the source code. Implementing this method allows the loader to read bytecode files. Raises OSError when the path cannot be handled. r� )r� )r� r* r r r � path_stats� s zSourceLoader.path_statsc C s | � ||�S )z�Optional method which writes data (bytes) to a file path (a str). Implementing this method allows for the writing of bytecode files. The source path is needed in order to correctly transfer permissions )�set_data)r� rz � cache_pathrF r r r �_cache_bytecode� s z SourceLoader._cache_bytecodec C s dS )z�Optional method which writes data (bytes) to a file path (a str). Implementing this method allows for the writing of bytecode files. Nr )r� r* rF r r r r� s zSourceLoader.set_datac C sR | � |�}y| �|�}W n0 tk rH } ztd|d�|�W dd}~X Y nX t|�S )z4Concrete implementation of InspectLoader.get_source.z'source not available through get_data())r� N)r� �get_datar1 r� r� )r� r� r* r� �excr r r � get_source s zSourceLoader.get_sourceru )� _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_inheritrY )r� r� �compile)r� rF r* r r r r �source_to_code s zSourceLoader.source_to_codec C s. | � |�}d}d}d}d}d}y t|�}W n tk rD d}Y �n0X y| �|�} W n tk rj Y �n X t| d �}y| �|�} W n tk r� Y n�X ||d�} y�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|��} y | �||| � t�d|� W n tk �r( Y nX |S )z�Concrete implementation of InspectLoader.get_code. 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NFTr� )r� r* r� r# rO rK �never�always�sizez {} matches {})r� rx rz zcode object from {}z wrote {!r})r� rh rW r� r1 r r r� � memoryviewr� �check_hash_based_pycsr� �_RAW_MAGIC_NUMBERr� r� r� r� r� r� r� r r �dont_write_bytecoder� r� r& r� )r� r� rz r� r� r� � hash_based� check_sourcerx �strF r� rX � bytes_data� code_objectr r r r� s� zSourceLoader.get_codeN) r� r� r� r� r� r� r� r 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.N)r� r* )r� r� r* r r r r� t s zFileLoader.__init__c C s | j |j ko| j|jkS )N)� __class__r� )r� �otherr r r �__eq__z s zFileLoader.__eq__c C s t | j�t | j�A S )N)�hashr� r* )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. )�superr r� )r� r� )r r r r� � s zFileLoader.load_modulec C s | j S )z:Return the path to the source file as found by the finder.)r* )r� r� r r r r� � s zFileLoader.get_filenamec C s t �|d�� }|�� S Q R X dS )z'Return the data from path as raw bytes.�rN)rA rB �read)r� r* rI r r r r � s zFileLoader.get_datac C s | � |�r| S d S )N)r� )r� r� r r r �get_resource_reader� s z FileLoader.get_resource_readerc C s t t| j�d |�}t�|d�S )NrO r )r" r. r* rA rB )r� �resourcer* r r r � open_resource� s zFileLoader.open_resourcec C s& | � |�st�tt| j�d |�}|S )NrO )� is_resource�FileNotFoundErrorr" r. r* )r� r r* r r r � resource_path� s zFileLoader.resource_pathc C s( t |kr dS tt| j�d |�}t|�S )NFrO )r r" r. r* r6 )r� r� r* r r r r � s zFileLoader.is_resourcec C s t t�t| j�d ��S )NrO )�iterr �listdirr. r* )r� r r r �contents� s zFileLoader.contents)r� r� r� r� r� r r r� r� r� r r r r! r r$ � __classcell__r r )r r r o s r 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� r )r0 �st_mtime�st_size)r� r* r r r r r� � s zSourceFileLoader.path_statsc C s t |�}| j|||d�S )N)�_mode)r� r� )r� rz rx rF r3 r r r r� � s z SourceFileLoader._cache_bytecodei� )r) c C s� t |�\}}g }x&|r6t|�s6t |�\}}|�|� qW xnt|�D ]b}t||�}yt�|� W qB tk rt wBY qB tk r� } zt � d||� dS d}~X Y qBX qBW y t |||� t � d|� W n0 tk r� } zt � d||� W dd}~X Y nX dS )zWrite bytes data to a file.zcould not create {!r}: {!r}Nz created {!r}) r. r8 r� r( r" r �mkdir�FileExistsErrorr1 r� r� rJ ) r� r* rF r) �parentr~ r! r r r r r r� � s* zSourceFileLoader.set_dataN)r� r� r� r� r� r� r� r r r r r& � s r& c @ s e Zd ZdZdd� Zdd� ZdS )�SourcelessFileLoaderz-Loader which handles sourceless file imports.c C sD | � |�}| �|�}||d�}t|||� tt|�dd � ||d�S )N)r� r* r� )r� rx )r� r r� r� r )r� r� r* rF 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 r r � s z SourcelessFileLoader.get_sourceN)r� r� r� r� r� r r r r r r- � s r- c @ s\ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z e dd� �Z dS )�ExtensionFileLoaderz]Loader for extension modules. The constructor is designed to work with FileFinder. c C s || _ || _d S )N)r� r* )r� r� r* r r r r� s z ExtensionFileLoader.__init__c C s | j |j ko| j|jkS )N)r r� )r� r r r r r s zExtensionFileLoader.__eq__c C s t | j�t | j�A S )N)r r� r* )r� r r r r 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� r* )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� r* )r� r� 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 � <genexpr>! s z1ExtensionFileLoader.is_package.<locals>.<genexpr>)r. r* �any�EXTENSION_SUFFIXES)r� r� r )r2 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 r� $ s z ExtensionFileLoader.get_codec C s dS )z5Return None as extension modules have no source code.Nr )r� r� r r r r ( s z ExtensionFileLoader.get_sourcec C s | j S )z:Return the path to the source file as found by the finder.)r* )r� r� r r r r� , s z ExtensionFileLoader.get_filenameN)r� r� r� r� r� r r r� r� r� r� r r� r� r r r r r. � s r. c @ s` e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z dd� Z dd� Z dS )�_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 )N)�_name�_pathr} �_get_parent_path�_last_parent_path� _path_finder)r� r� r* � path_finderr r r r� 9 s z_NamespacePath.__init__c C s& | j �d�\}}}|dkr dS |dfS )z>Returns a tuple of (parent-module-name, parent-path-attr-name)rN r% )r r* �__path__)r7 r' )r� r, �dot�mer r r �_find_parent_path_names? s z&_NamespacePath._find_parent_path_namesc C s | � � \}}ttj| |�S )N)r@ r� r �modules)r� �parent_module_name�path_attr_namer r r r9 I s z _NamespacePath._get_parent_pathc C sP t | �� �}|| jkrJ| �| j|�}|d k rD|jd krD|jrD|j| _|| _| jS )N)r} r9 r: r; r7 r� r� r8 )r� � parent_pathr� r r r � _recalculateM s z_NamespacePath._recalculatec C s t | �� �S )N)r" rE )r� r r r �__iter__Z s z_NamespacePath.__iter__c C s || j |< d S )N)r8 )r� �indexr* r r r � __setitem__] s z_NamespacePath.__setitem__c C s t | �� �S )N)r& rE )r� r r r �__len__` s z_NamespacePath.__len__c C s d� | j�S )Nz_NamespacePath({!r}))r; r8 )r� r r r �__repr__c s z_NamespacePath.__repr__c C s || � � kS )N)rE )r� �itemr r r � __contains__f s z_NamespacePath.__contains__c C s | j �|� d S )N)r8 r� )r� rK r r r r� i s z_NamespacePath.appendN)r� r� r� r� r� r@ r9 rE rF rH rI rJ rL r� r r r r r6 2 s r6 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 )N)r6 r8 )r� r� r* r< r r r r� o 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_reprr s z _NamespaceLoader.module_reprc C s dS )NTr )r� r� r r r r� { s z_NamespaceLoader.is_packagec C s dS )Nr% r )r� r� r r r r ~ s z_NamespaceLoader.get_sourcec C s t ddddd�S )Nr% z<string>r� T)r )r )r� r� r r r r� � s z_NamespaceLoader.get_codec C s dS )z*Use default semantics for module creation.Nr )r� r� r r r r� � s z _NamespaceLoader.create_modulec C s d S )Nr )r� r� 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� r8 r� )r� r� r r r r� � s z _NamespaceLoader.load_moduleN) r� r� r� r� r� rN r� r r� r� r� r� r r r r rM n s rM c @ sj e Zd ZdZedd� �Zedd� �Zedd� �Zedd � �Zedd d ��Z edd d��Z eddd��Z d S )� PathFinderz>Meta path finder for sys.path and package __path__ attributes.c C sD x>t tj�� �D ],\}}|dkr*tj|= qt|d�r|�� qW dS )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� rP )r� r� �finderr r r rP � s z PathFinder.invalidate_cachesc C sT t jdk r t js t�dt� x2t jD ]$}y||�S tk rF w$Y q$X q$W dS dS )z.Search sys.path_hooks for a finder for 'path'.Nzsys.path_hooks is empty)r � path_hooksrP rQ r� r� )r� r* �hookr r r � _path_hooks� s zPathFinder._path_hooksc C sf |dkr*y t �� }W n tk r( dS X ytj| }W n( tk r` | �|�}|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 r7 r r rR �KeyErrorrW )r� r* rT r r r �_path_importer_cache� 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� rT r� r� r� r r r �_legacy_get_spec� s zPathFinder._legacy_get_specNc C s� g }x�|D ]�}t |ttf�s q | �|�}|dk r t|d�rH|�||�}n | �||�}|dkr^q |jdk rl|S |j}|dkr�t d��|� |� q W t � |d�}||_|S dS )z?Find the loader or namespace_path for this module/package name.Nr� zspec missing loader) r� rZ �bytesrY r� r� rZ r� r� r� r� r� r� ) r� r� r* r� �namespace_path�entryrT r� r� r r r � _get_spec� 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 r* r^ r� r� r� r6 )r� r� r* r� r� r\ r r r r� � 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. N)r� r� )r� r� r* r� r r r r� s zPathFinder.find_module)N)NN)N) r� r� r� r� r� rP rW rY rZ r^ r� r� r r r r rO � s rO 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 sX g }x(|D ] \� }|� � fdd�|D �� q W || _|p:d| _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 )Nr )r r1 )r� r r r3 - s z&FileFinder.__init__.<locals>.<genexpr>rN ru N)r� �_loadersr* � _path_mtime�set� _path_cache�_relaxed_path_cache)r� r* �loader_details�loadersr� r )r� r r� ' s zFileFinder.__init__c C s d| _ dS )z Invalidate the directory mtime.ru N)ra )r� r r r rP 5 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 )N)r� r� )r� )r� r� r� r* �smslr� r� r r r r^ G s zFileFinder._get_specNc C sb d}|� d�d }yt| jp"t�� �j}W n tk rB d}Y nX || jkr\| �� || _t � rr| j }|� � }n | j }|}||kr�t | j|�}xH| jD ]6\} } d| } t || �} t| �r�| �| || |g|�S q�W t|�}xX| jD ]N\} } t | j|| �} tjd| dd� || |kr�t| �r�| �| || d|�S q�W |�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. FrN rK ru r� z trying {})� verbosityNzpossible namespace for {})r' r0 r* r r7 r' r1 ra � _fill_cacher rd rw rc r" r` r6 r^ r8 r� r� r� r� )r� r� r� � is_namespace� tail_moduler� �cache� cache_module� base_pathr1 r� � init_filename� full_pathr� r r r r� L sF zFileFinder.find_specc C s� | j }yt�|pt�� �}W n tttfk r: g }Y nX tj� d�sTt |�| _ nNt � }x@|D ]8}|� d�\}}}|r�d� ||�� �}n|}|�|� q`W || _ tj� t�r�dd� |D �| _dS )zDFill the cache of potential modules and packages for this directory.r rN z{}.{}c S s h | ] }|� � �qS r )rw )r �fnr r r � <setcomp>� s z)FileFinder._fill_cache.<locals>.<setcomp>N)r* r r# r7 r �PermissionError�NotADirectoryErrorr r r rb rc rl r; rw �addr rd ) r� r* r$ �lower_suffix_contentsrK r� r> r1 �new_namer r r ri | 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 supported)r* )r8 r� )r* )r� re r r �path_hook_for_FileFinder� s z6FileFinder.path_hook.<locals>.path_hook_for_FileFinderr )r� re rx r )r� re r � path_hook� s zFileFinder.path_hookc C s d� | j�S )NzFileFinder({!r}))r; r* )r� r r r rJ � s zFileFinder.__repr__)N)r� r� r� r� r� rP r� r� r� r^ r� ri r� ry rJ r r r r r_ s 0 r_ c C s� | � d�}| � d�}|sB|r$|j}n ||kr8t||�}n t||�}|sTt|||d�}y$|| d< || d< || d< || d< W n tk r� Y nX d S )N� __loader__�__spec__)r� �__file__� __cached__)�getr� r- r& r� � Exception)�nsr� �pathname� cpathnamer� r� r r r �_fix_up_module� s" r� c C s& t t�� f} ttf}ttf}| ||gS )z_Returns a list of file-based module loaders. Each item is a tuple (loader, suffixes). )r. r� �extension_suffixesr& rm r- r_ )� extensions�source�bytecoder r r r� � s r� c C s� | a t jat jatjt }x8dD ]0}|tjkr:t �|�}n tj| }t|||� q W ddgfdddgff}xv|D ]f\}}tdd� |D ��s�t�|d }|tjkr�tj| }P qpyt �|�}P W qp t k r� wpY qpX qpW t d ��t|d |� t|d |� t|d d � |�� t �d�} t|d| � t �d�} t|d| � |dk�rXt �d�} t|d| � t|dt � � t � t�� � |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. )rA rP �builtinsr� �posix�/�nt�\c s s | ]}t |�d kV qdS )r# N)r& )r rd r r r r3 � s z_setup.<locals>.<genexpr>rO z importlib requires posix or ntr r r r% �_thread�_weakref�winregr� r z.pywz_d.pydTN)r� r r� rA r� �_builtin_from_namer� �allr� r� r r r5 r� r� rm r� r� r� ) �_bootstrap_module� self_module� builtin_name�builtin_module� os_details� builtin_osr r � os_module� thread_module�weakref_module� winreg_moduler r r �_setup� sL r� c C s2 t | � t� }tj�tj|� g� tj�t � dS )z)Install the path-based import components.N) r� r� r rU r� r_ ry � meta_pathr� rO )r� �supported_loadersr r r �_install s r� )r9 )N)NNN)rO rO )T)N)N)=r� r �%_CASE_INSENSITIVE_PLATFORMS_BYTES_KEYr r r r r" r. r0 r5 r6 r8 rJ �type�__code__r� r r� r r r r^ r] rm r_ �DEBUG_BYTECODE_SUFFIXES�OPTIMIZED_BYTECODE_SUFFIXESrh rs r{ r r� r� r� r� r� r� r� r� r� r� �objectr� r� r� r� r� r r& r- r5 r. r6 rM rO r_ r� r� r� r� r r r r �<module> sv -" ! C@ D-5<* @
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