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Code Editor : _bootstrap.cpython-34.pyc
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One should use importlib as the public-facing version of this module. �win�cygwin�darwinc C s1 t j j t � r! d d � } n d d � } | S)Nc S s d t j k S)z5True if filenames must be checked case-insensitively.s PYTHONCASEOK)�_os�environ� r r �9/opt/alt/python34/lib64/python3.4/importlib/_bootstrap.py� _relax_case s z%_make_relax_case.<locals>._relax_casec S s d S)z5True if filenames must be checked case-insensitively.Fr r r r r r " s )�sys�platform� startswith�_CASE_INSENSITIVE_PLATFORMS)r r r r �_make_relax_case s r c C s t | � d @j d d � 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 j | d � S)z/Convert 4 bytes in little-endian to an integer.r )r � from_bytes)� int_bytesr r r �_r_long- s r c G s t j d d � | D� � S)z Replacement for os.path.join().c S s% g | ] } | r | j t � � q Sr )�rstrip�path_separators)�.0�partr r r � <listcomp>4 s z _path_join.<locals>.<listcomp>)�path_sep�join)� path_partsr r r � _path_join2 s r c C s� t t � d k r4 | j t � \ } } } | | f SxE t | � D]7 } | t k rA | j | d d �\ } } | | f SqA Wd | f S)z Replacement for os.path.split().� �maxsplit� )�lenr � rpartitionr �reversed�rsplit)�path�front�_�tailr r r r � _path_split8 s r+ c C s t j | � 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_statD s r- c C s: y t | � } Wn t k r( d SYn X| j d @| k S)z1Test whether the path is the specified mode type.Fi � )r- �OSError�st_mode)r' �mode� stat_infor r r �_path_is_mode_typeN s r2 c C s t | d � S)z Replacement for os.path.isfile.i � )r2 )r' r r r � _path_isfileW s r3 c C s" | s t j � } n t | d � S)z Replacement for os.path.isdir.i @ )r �getcwdr2 )r' r r r � _path_isdir\ s r5 i� c C s� d j | t | � � } t j | t j t j Bt j B| d @� } y< t j | d � � } | j | � Wd QXt j | | � Wn; t k r� y t j | � Wn t k r� Yn X� Yn Xd S)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�replacer. �unlink)r' �datar0 �path_tmp�fd�filer r r � _write_atomicc s ! rF c C s_ xE d d d d g D]1 } t | | � r t | | t | | � � q q W| j j | j � d S)z/Simple substitute for functools.update_wrapper.� __module__�__name__� __qualname__�__doc__N)�hasattr�setattr�getattr�__dict__�update)�new�oldr@ r r r �_wrapy s rR c C s t t � | � S)N)�typer )�namer r r � _new_module� s rU c @ s: e Z d Z d Z d d � Z d d � Z d d � Z d S) � _ManageReloadz?Manages the possible clean-up of sys.modules for load_module().c C s | | _ d S)N)�_name)�selfrT r r r �__init__� s z_ManageReload.__init__c C s | j t j k | _ d S)N)rW r �modules� _is_reload)rX r r r � __enter__� s z_ManageReload.__enter__c G sP t d d � | D� � rL | j rL y t j | j =WqL t k rH YqL Xn d S)Nc s s | ] } | d k Vq d S)Nr )r �argr r r � <genexpr>� s z)_ManageReload.__exit__.<locals>.<genexpr>)�anyr[ r rZ rW �KeyError)rX �argsr r r �__exit__� s # z_ManageReload.__exit__N)rH rG rI rJ rY r\ rb r r r r rV � s rV c @ s e Z d Z d S)�_DeadlockErrorN)rH rG rI r r r r rc � s rc c @ sR e Z d Z d Z d d � Z d d � Z d d � Z d d � Z d d � Z d S) � _ModuleLockz�A recursive lock implementation which is able to detect deadlocks (e.g. thread 1 trying to take locks A then B, and thread 2 trying to take locks B then A). c C sF t j � | _ t j � | _ | | _ d | _ d | _ d | _ d S)N� )�_thread� allocate_lock�lock�wakeuprT �owner�count�waiters)rX rT r r r rY � s z_ModuleLock.__init__c C sX t j � } | j } x< t j | � } | d k r7 d S| j } | | k r d Sq Wd S)NFT)rf � get_identrj � _blocking_on�get)rX �me�tidrh r r r � has_deadlock� s z_ModuleLock.has_deadlockc C s� t j � } | t | <z� x� | j �� | j d k sD | j | k r` | | _ | j d 7_ d S| j � r t d | � � n | j j d � r� | j d 7_ n Wd QX| j j � | j j � q WWd t | =Xd S)z� Acquire the module lock. If a potential deadlock is detected, a _DeadlockError is raised. Otherwise, the lock is always acquired and True is returned. re r Tzdeadlock detected by %rFN) rf rm rn rh rk rj rr rc ri �acquirerl �release)rX rq r r r rs � s z_ModuleLock.acquirec C s� t j � } | j �� | j | k r4 t d � � n | j d k sI t � | j d 8_ | j d k r� d | _ | j r� | j d 8_ | j j � q� n Wd QXd S)Nz cannot release un-acquired lockre r ) rf rm rh rj � RuntimeErrorrk �AssertionErrorrl ri rt )rX rq r r r rt � s z_ModuleLock.releasec C s d j | j t | � � S)Nz_ModuleLock({!r}) at {})r7 rT r8 )rX r r r �__repr__� s z_ModuleLock.__repr__N) rH rG rI rJ rY rr rs rt rw r r r r rd � s rd c @ sF e Z d Z d Z d d � Z d d � Z d d � Z d d � Z d S) �_DummyModuleLockzVA simple _ModuleLock equivalent for Python builds without multi-threading support.c C s | | _ d | _ d S)Nre )rT rk )rX rT r r r rY � s z_DummyModuleLock.__init__c C s | j d 7_ d S)Nr T)rk )rX r r r rs � s z_DummyModuleLock.acquirec C s1 | j d k r t d � � n | j d 8_ d S)Nre z cannot release un-acquired lockr )rk ru )rX r r r rt � s z_DummyModuleLock.releasec C s d j | j t | � � S)Nz _DummyModuleLock({!r}) at {})r7 rT r8 )rX r r r rw � s z_DummyModuleLock.__repr__N)rH rG rI rJ rY rs rt rw r r r r rx � s rx c @ s4 e Z d Z d d � Z d d � Z d d � Z d S)�_ModuleLockManagerc C s | | _ d | _ d S)N)rW �_lock)rX rT r r r rY s z_ModuleLockManager.__init__c C s5 z t | j � | _ Wd t j � X| j j � d S)N)�_get_module_lockrW rz �_imp� release_lockrs )rX r r r r\ s z _ModuleLockManager.__enter__c O s | j j � d S)N)rz rt )rX ra �kwargsr r r rb s z_ModuleLockManager.__exit__N)rH rG rI rY r\ rb r r r r ry � s ry c s� d } y t � � } Wn t k r+ Yn X| d k r� t d k rS t � � } n t � � } � f d d � } t j | | � t � <n | S)zmGet or create the module lock for a given module name. Should only be called with the import lock taken.Nc s t � =d S)N)� _module_locks)r) )rT r r �cb s z _get_module_lock.<locals>.cb)r r` rf rx rd �_weakref�ref)rT rh r� r )rT r r{ s r{ c C sG t | � } t j � y | j � Wn t k r8 Yn X| j � d S)a Release the global import lock, and acquires then release the module lock for a given module name. This is used to ensure a module is completely initialized, in the event it is being imported by another thread. Should only be called with the import lock taken.N)r{ r| r} rs rc rt )rT rh r r r �_lock_unlock_module% s r� c O s | | | � S)a. remove_importlib_frames in import.c will always remove sequences of importlib frames that end with a call to this function Use it instead of a normal call in places where including the importlib frames introduces unwanted noise into the traceback (e.g. when executing module code) r )�fra �kwdsr r r �_call_with_frames_removed9 s r� i� � r s � __pycache__z.pyz.pycz.pyoNc C s� | d k r t j j n | } | r. t } n t } t | � \ } } | j d � \ } } } t j j } | d k r� t d � � n d j | r� | n | | | | d g � } t | t | � S)a� Given the path to a .py file, return the path to its .pyc/.pyo file. The .py file does not need to exist; this simply returns the path to the .pyc/.pyo file calculated as if the .py file were imported. The extension will be .pyc unless sys.flags.optimize is non-zero, then it will be .pyo. If debug_override is not None, then it must be a boolean and is used in place of sys.flags.optimize. If sys.implementation.cache_tag is None then NotImplementedError is raised. N�.z$sys.implementation.cache_tag is Noner" re ) r �flags�optimize�DEBUG_BYTECODE_SUFFIXES�OPTIMIZED_BYTECODE_SUFFIXESr+ r$ �implementation� cache_tag�NotImplementedErrorr r �_PYCACHE) r' �debug_override�debug�suffixes�headr* �base�sep�rest�tag�filenamer r r �cache_from_source� s +r� c C s� t j j d k r! t d � � n t | � \ } } t | � \ } } | t k rl t d j t | � � � n | j d � d k r� t d j | � � � n | j d � d } t | | t d � S)ay Given the path to a .pyc./.pyo file, return the path to its .py file. The .pyc/.pyo file does not need to exist; this simply returns the path to the .py file calculated to correspond to the .pyc/.pyo file. If path does not conform to PEP 3147 format, ValueError will be raised. If sys.implementation.cache_tag is None then NotImplementedError is raised. Nz$sys.implementation.cache_tag is Nonez%{} not bottom-level directory in {!r}r� r� z expected only 2 dots in {!r}re ) r r� r� r� r+ r� � ValueErrorr7 rk � partitionr �SOURCE_SUFFIXES)r' r� �pycache_filename�pycache� base_filenamer r r �source_from_cache� s r� c C s� t | � d k r d S| j d � \ } } } | sQ | j � d d � d k rU | Sy t | � } Wn( t t f k r� | d d � } Yn Xt | � r� | S| S) z�Convert a bytecode file path to a source path (if possible). This function exists purely for backwards-compatibility for PyImport_ExecCodeModuleWithFilenames() in the C API. re Nr� � r �py������r� )r# r$ �lowerr� r� r� r3 )� bytecode_pathr� r) � extension� source_pathr r r �_get_sourcefile� s #r� c C s< y t | � j } Wn t k r- d } Yn X| d O} | S)z3Calculate the mode permissions for a bytecode file.i� � )r- r/ r. )r' r0 r r r � _calc_mode� s r� � verbosityr c G sQ t j j | k rM | j d � s. d | } n t | j | � d t j �n d S)z=Print the message to stderr if -v/PYTHONVERBOSE is turned on.�#�import z# rE N)r� r� )r r� �verboser �printr7 �stderr)�messager� ra r r r �_verbose_message s r� c s& d � f d d � } t | � � | 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 sS | d k r | j } n( | j | k r@ t d | d | �� n � | | | | � S)Nzloader cannot handle %srT )rT � ImportError)rX rT ra r~ )�methodr r �_check_name_wrapper s z(_check_name.<locals>._check_name_wrapper)rR )r� r� r )r� r � _check_name s r� c s# � f d d � } t | � � | S)z1Decorator to verify the named module is built-in.c s: | t j k r- t d j | � d | �� n � | | � S)Nz {!r} is not a built-in modulerT )r �builtin_module_namesr� r7 )rX �fullname)�fxnr r �_requires_builtin_wrapper" s z4_requires_builtin.<locals>._requires_builtin_wrapper)rR )r� r� r )r� r �_requires_builtin s r� c s# � f d d � } t | � � | S)z/Decorator to verify the named module is frozen.c s: t j | � s- t d j | � d | �� n � | | � S)Nz{!r} is not a frozen modulerT )r| � is_frozenr� r7 )rX r� )r� r r �_requires_frozen_wrapper- s z2_requires_frozen.<locals>._requires_frozen_wrapper)rR )r� r� r )r� r �_requires_frozen+ s r� c C sW | j | � \ } } | d k rS t | � rS d } t j | j | d � t � n | 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__re )� find_loaderr# � _warnings�warnr7 � ImportWarning)rX r� �loader�portions�msgr r r �_find_module_shim6 s r� c C s] t | | � } t | � } | t j k rO t j | } | j | � t j | S| j � Sd S)z�Load the specified module into sys.modules and return it. This method is deprecated. Use loader.exec_module instead. N)�spec_from_loader� _SpecMethodsr rZ �exec�load)rX r� �spec�methods�moduler r r �_load_module_shimG s r� c C s� i } | d k r | | d <n d } | d k r> | | d <n | d d � } | d d � } | d d � } | t k r� d j | | � } t d | � t | | � � nz t | � d k r� d j | � } t d | � t | � � n= t | � d k r%d j | � } t d | � t | � � n | d k r�y t | d � } Wn t k rYYnA Xt | � | k r�d j | � } t d | � t | | � � n y | d d @} Wn t k r�Yq�Xt | � | k r�t d j | � | � � q�n | d d � S)az Validate the header of the passed-in bytecode against source_stats (if given) and returning the bytecode that can be compiled by compile(). All other arguments are used to enhance error reporting. ImportError is raised when the magic number is incorrect or the bytecode is found to be stale. EOFError is raised when the data is found to be truncated. NrT z <bytecode>r' r � � z bad magic number in {!r}: {!r}z{}z+reached EOF while reading timestamp in {!r}z0reached EOF while reading size of source in {!r}�mtimezbytecode is stale for {!r}�sizel �� ) � MAGIC_NUMBERr7 r� r� r# �EOFErrorr r` r ) rB � source_statsrT r' � exc_details�magic� raw_timestamp�raw_sizer� � source_mtime� source_sizer r r �_validate_bytecode_headerW sL r� c C ss t j | � } t | t � rN t d | � | d k rJ t j | | � n | St d j | � d | d | �� d S)z<Compile bytecode as returned by _validate_bytecode_header().zcode object from {!r}NzNon-code object in {!r}rT r' ) �marshal�loads� isinstance� _code_typer� r| �_fix_co_filenamer� r7 )rB rT r� r� �coder r r �_compile_bytecode� s r� re c C sL t t � } | j t | � � | j t | � � | j t j | � � | S)zPCompile a code object into bytecode for writing out to a byte-compiled file.)� bytearrayr� �extendr r� �dumps)r� r� r� rB r r r �_code_to_bytecode� s r� c C sY d d l } t j | � j } | j | � } t j d d � } | j | j | d � � S)zyDecode bytes representing source code and return the string. Universal newline support is used in the decoding. re NT)�tokenizer= �BytesIO�readline�detect_encoding�IncrementalNewlineDecoder�decode)� source_bytesr� �source_bytes_readline�encoding�newline_decoderr r r � decode_source� s r� c # C s t | d d � } t | d � rJ y | j | � SWqJ t k rF YqJ Xn y | j } Wn t k rk Yn X| d k r� t | � j � Sy | j } Wn t k r� d } Yn Xy | j } Wn; t k r� | d k r� d j | � Sd j | | � SYn Xd j | | � Sd S)N� __loader__� module_repr�?z <module {!r}>z<module {!r} ({!r})>z<module {!r} from {!r}>) rM rK r� � Exception�__spec__�AttributeErrorr� rH �__file__r7 )r� r� r� rT r� r r r � _module_repr� s. r� c @ s4 e Z d Z d d � Z d d � Z d d � Z d S)�_installed_safelyc C s | | _ | j | _ d S)N)�_moduler� �_spec)rX r� r r r rY � s z_installed_safely.__init__c C s& d | j _ | j t j | j j <d S)NT)r � _initializingr� r rZ rT )rX r r r r\ � s z_installed_safely.__enter__c G sy ze | j } t d d � | D� � rN y t j | j =Wqd t k rJ Yqd Xn t d | j | j � Wd d | j _ Xd S)Nc s s | ] } | d k Vq d S)Nr )r r] r r r r^ � s z-_installed_safely.__exit__.<locals>.<genexpr>zimport {!r} # {!r}F) r r_ r rZ rT r` r� r� r )rX ra r� r r r rb � s z_installed_safely.__exit__N)rH rG rI rY r\ rb r r r r r� � s r� c @ s� e Z d Z d Z d d d d d d d d � Z d d � Z d d � Z e d d � � Z e j d d � � Z e d d � � Z e d d � � Z e j d d � � Z d S)� ModuleSpeca� The specification for a module, used for loading. A module's spec is the source for information about the module. For data associated with the module, including source, use the spec's loader. `name` is the absolute name of the module. `loader` is the loader to use when loading the module. `parent` is the name of the package the module is in. The parent is derived from the name. `is_package` determines if the module is considered a package or not. On modules this is reflected by the `__path__` attribute. `origin` is the specific location used by the loader from which to load the module, if that information is available. When filename is set, origin will match. `has_location` indicates that a spec's "origin" reflects a location. When this is True, `__file__` attribute of the module is set. `cached` is the location of the cached bytecode file, if any. It corresponds to the `__cached__` attribute. `submodule_search_locations` is the sequence of path entries to search when importing submodules. If set, is_package should be True--and False otherwise. Packages are simply modules that (may) have submodules. If a spec has a non-None value in `submodule_search_locations`, the import system will consider modules loaded from the spec as packages. Only finders (see importlib.abc.MetaPathFinder and importlib.abc.PathEntryFinder) should modify ModuleSpec instances. �originN� loader_state� is_packagec C sO | | _ | | _ | | _ | | _ | r0 g n d | _ d | _ d | _ d S)NF)rT r� r r �submodule_search_locations� _set_fileattr�_cached)rX rT r� r r r r r r rY s zModuleSpec.__init__c C s� d j | j � d j | j � g } | j d k rO | j d j | j � � n | j d k rz | j d j | j � � n d j | j j d j | � � S)Nz name={!r}z loader={!r}z origin={!r}z submodule_search_locations={}z{}({})z, ) r7 rT r� r �appendr � __class__rH r )rX ra r r r rw " s zModuleSpec.__repr__c C s� | j } yk | j | j k or | j | j k or | j | j k or | | j k or | j | j k or | j | j k SWn t k r� d SYn Xd S)NF)r rT r� r �cached� has_locationr� )rX �other�smslr r r �__eq__, s zModuleSpec.__eq__c C s� | j d k r� | j d k r� | j r� | j } | j t t � � rp y t | � | _ Wq� t k rl Yq� Xq� | j t t � � r� | | _ q� q� n | j S)N) r r r �endswith�tupler� r� r� �BYTECODE_SUFFIXES)rX r� r r r r 8 s zModuleSpec.cachedc C s | | _ d S)N)r )rX r r r r r F s c C s. | j d k r# | j j d � d S| j Sd S)z The name of the module's parent.Nr� re )r rT r$ )rX r r r �parentJ s zModuleSpec.parentc C s | j S)N)r )rX r r r r R s zModuleSpec.has_locationc C s t | � | _ d S)N)�boolr )rX �valuer r r r V s ) rH rG rI rJ rY rw r �propertyr �setterr r r r r r r � s # r r r c C s� t | d � rS | d k r+ t | d | �S| r7 g n d } t | d | d | �S| d k r� t | d � r� y | j | � } Wq� t k r� d } Yq� Xq� d } n t | | d | d | �S)z5Return a module spec based on various loader methods.� get_filenameNr� r r Fr )rK �spec_from_file_locationr r� r )rT r� r r �searchr r r r� [ s r� r� r c C sn | d k rO d } t | d � rO y | j | � } WqL t k rH YqL XqO n t | | d | �} d | _ | d k r� xO t � D]= \ } } | j t | � � r� | | | � } | | _ Pq� q� Wd Sn | t k r&t | d � r/y | j | � } Wn t k r Yq#X| r#g | _ q#q/n | | _ | j g k rj| rjt | � d } | j j | � qjn | 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>r r Tr re )rK r r� r r �_get_supported_file_loadersr r r� � _POPULATEr r r+ r ) rT �locationr� r r� � loader_classr� r �dirnamer r r r t s< r c 5 C s| y | j } Wn t k r! Yn X| d k r2 | S| j } | d k rl y | j } Wql t k rh Yql Xn y | j } Wn t k r� d } Yn X| d k r� | d k r� y | j } Wq� t k r� d } Yq� Xq� | } n y | j } Wn t k rd } Yn Xy t | j � } Wn t k r5d } Yn Xt | | d | �} | d k r]d n d | _ | | _ | | _ | S)Nr FT) r� r� rH r� r� �_ORIGIN� __cached__�list�__path__r r r r )r� r� r r� rT r r r r r r �_spec_from_module� sH r$ c @ s� e Z d Z d Z d d � Z d d � Z d d d d d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d S)r� zMConvenience wrapper around spec objects to provide spec-specific methods.c C s | | _ d S)N)r� )rX r� r r r rY � s z_SpecMethods.__init__c C s� | j } | j d k r d n | j } | j d k rh | j d k rR d j | � Sd j | | j � Sn2 | j r� d j | | j � Sd j | j | j � Sd S)z&Return the repr to use for the module.Nr� z <module {!r}>z<module {!r} ({!r})>z<module {!r} from {!r}>z<module {!r} ({})>)r� rT r r� r7 r )rX r� rT r r r r� � s z_SpecMethods.module_repr� _overrideF� _force_nameTc ; C sK | j } | s- | s- t | d d � d k rU y | j | _ WqU t k rQ YqU Xn | ss t | d d � d k r� | j } | d k r� | j d k r� t j t � } | j | _ q� n y | | _ Wq� t k r� Yq� Xn | s� t | d d � d k r#y | j | _ Wq#t k r Yq#Xn y | | _ Wn t k rDYn X| sct | d d � d k r�| j d k r�y | j | _ Wq�t k r�Yq�Xq�n | j rG| s�t | d d � d k r�y | j | _ Wq�t k r�Yq�Xn | s t | d d � d k rG| j d k rDy | j | _ WqAt k r=YqAXqDqGn d S)a Set the module's attributes. All missing import-related module attributes will be set. Here is how the spec attributes map onto the module: spec.name -> module.__name__ spec.loader -> module.__loader__ spec.parent -> module.__package__ spec -> module.__spec__ Optional: spec.origin -> module.__file__ (if spec.set_fileattr is true) spec.cached -> module.__cached__ (if __file__ also set) spec.submodule_search_locations -> module.__path__ (if set) rH Nr� � __package__r# r� r! )r� rM rT rH r� r� r �_NamespaceLoader�__new__�_pathr� r r' r� r# r r r� r r! )rX r� r% r& r� r� r r r �init_module_attrs� sX z _SpecMethods.init_module_attrsc C se | j } t | j d � r0 | j j | � } n d } | d k rT t | j � } n | j | � | S)z�Return a new module to be loaded. The import-related module attributes are also set with the appropriate values from the spec. � create_moduleN)r� rK r� r, rU rT r+ )rX r� r� r r r �createK s z_SpecMethods.createc C s | j j j | � d S)z�Do everything necessary to execute the module. The namespace of `module` is used as the target of execution. This method uses the loader's `exec_module()` method. N)r� r� � exec_module)rX r� r r r �_execb s z_SpecMethods._execc C s | j j } t j � t | � �� t j j | � | k r_ d j | � } t | d | �� n | j j d k r� | j j d k r� t d d | j j �� n | j | d d �| S| j | d d �t | j j d � s� | j j j | � n | j | � Wd QXt j | S)z3Execute the spec in an existing module's namespace.z module {!r} not in sys.modulesrT Nzmissing loaderr% Tr. )r� rT r| � acquire_lockry r rZ ro r7 r� r� r r+ rK � load_moduler/ )rX r� rT r� r r r r� l s z_SpecMethods.execc C s | j } | j j | j � t j | j } t | d d � d k rl y | j | _ Wql t k rh Yql Xn t | d d � d k r� y; | j | _ t | d � s� | j j d � d | _ n Wq� t k r� Yq� Xn t | d d � d k ry | | _ Wqt k rYqXn | S)Nr� r' r# r� re r� )r� r� r1 rT r rZ rM r� r� rH r' rK r$ r� )rX r� r� r r r �_load_backward_compatible� s* z&_SpecMethods._load_backward_compatiblec C s� | j j d k r4 t | j j d � s4 | j � Sn | j � } t | � �T | j j d k r� | j j d k r� t d d | j j �� q� n | j | � Wd QXt j | j j S)Nr. zmissing loaderrT ) r� r� rK r2 r- r� r r� rT r/ r rZ )rX r� r r r �_load_unlocked� s z_SpecMethods._load_unlockedc C s1 t j � t | j j � � | j � SWd QXd S)z�Return a new module object, loaded by the spec's loader. The module is not added to its parent. If a module is already in sys.modules, that existing module gets clobbered. N)r| r0 ry r� rT r3 )rX r r r r� � s z_SpecMethods.loadN) rH rG rI rJ rY r� r+ r- r/ r� r2 r3 r� r r r r r� � s P r� c C s� | j d � } | j d � } | sf | r6 | j } qf | | k rT t | | � } qf t | | � } n | s� t | | d | �} n y, | | d <| | d <| | d <| | d <Wn t k r� Yn Xd S)Nr� r� r� r� r! )ro r� �SourcelessFileLoader�SourceFileLoaderr r� )�nsrT �pathname� cpathnamer� r� r r r �_fix_up_module� s" r9 c @ s� e Z d Z d Z e d d � � Z e d d d d � � Z e d d d � � Z e e d d � � � Z e e d d � � � Z e e d d � � � Z e e d d � � � Z d S)�BuiltinImporterz�Meta path import for built-in modules. All methods are either class or static methods to avoid the need to instantiate the class. c C s d j | j � S)zsReturn repr for the module. The method is deprecated. The import machinery does the job itself. z<module {!r} (built-in)>)r7 rH )r� r r r r� � s zBuiltinImporter.module_reprNc C s: | d k r d St j | � r2 t | | d d �Sd Sd S)Nr zbuilt-in)r| � is_builtinr� )�clsr� r' �targetr r r � find_spec� s zBuiltinImporter.find_specc C s) | j | | � } | d k r% | j Sd S)z�Find the built-in module. If 'path' is ever specified then the search is considered a failure. This method is deprecated. Use find_spec() instead. N)r> r� )r< r� r' r� r r r � find_module� s zBuiltinImporter.find_modulec C s; t | � � t t j | � } Wd QX| | _ d | _ | S)zLoad a built-in module.Nr" )rV r� r| � init_builtinr� r' )r< r� r� r r r r1 s zBuiltinImporter.load_modulec C s d S)z9Return None as built-in modules do not have code objects.Nr )r< r� r r r �get_code s zBuiltinImporter.get_codec C s d S)z8Return None as built-in modules do not have source code.Nr )r< r� r r r � get_source s zBuiltinImporter.get_sourcec C s d S)z4Return False as built-in modules are never packages.Fr )r< r� r r r r s zBuiltinImporter.is_package)rH rG rI rJ � staticmethodr� � classmethodr> r? r� r1 rA rB r r r r r r: � s r: c @ s� e Z d Z d Z e d d � � Z e d d d d � � Z e d d d � � Z e d d � � Z e d d � � Z e e d d � � � Z e e d d � � � Z e e d d � � � Z d S)�FrozenImporterz�Meta path import for frozen modules. All methods are either class or static methods to avoid the need to instantiate the class. c C s d j | j � S)zsReturn repr for the module. The method is deprecated. The import machinery does the job itself. z<module {!r} (frozen)>)r7 rH )�mr r r r� / s zFrozenImporter.module_reprNc C s* t j | � r" t | | d d �Sd Sd S)Nr �frozen)r| r� r� )r< r� r' r= r r r r> 8 s zFrozenImporter.find_specc C s t j | � r | Sd S)z]Find a frozen module. This method is deprecated. Use find_spec() instead. N)r| r� )r< r� r' r r r r? ? s zFrozenImporter.find_modulec C s_ | j j } t j | � s9 t d j | � d | �� n t t j | � } t | | j � d S)Nz{!r} is not a frozen modulerT ) r� rT r| r� r� r7 r� �get_frozen_objectr� rN )r� rT r� r r r r. H s zFrozenImporter.exec_modulec C s t | | � S)z_Load a frozen module. This method is deprecated. Use exec_module() instead. )r� )r< r� r r r r1 Q s zFrozenImporter.load_modulec C s t j | � S)z-Return the code object for the frozen module.)r| rH )r< r� r r r rA Z s zFrozenImporter.get_codec C s d S)z6Return None as frozen modules do not have source code.Nr )r< r� r r r rB ` s zFrozenImporter.get_sourcec C s t j | � S)z.Return True if the frozen module is a package.)r| �is_frozen_package)r< r� r r r r f s zFrozenImporter.is_package)rH rG rI rJ rC r� rD r> r? r. r1 r� rA rB r r r r r rE & s rE c @ sy e Z d Z d Z d Z d Z d Z e d d � � Z e d d � � Z e d d d d � � Z e d d 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 sC y t j t j | � SWn% t k r> t j t j | � SYn Xd S)N)�_winreg�OpenKey�HKEY_CURRENT_USERr. �HKEY_LOCAL_MACHINE)r< �keyr r r �_open_registryy s z$WindowsRegistryFinder._open_registryc C s� | j r | j } n | j } | j d | d t j d d � � } y. | j | � � } t j | d � } Wd QXWn t k r� d SYn X| S)Nr� � sys_versionr� r" ) � DEBUG_BUILD�REGISTRY_KEY_DEBUG� REGISTRY_KEYr7 r �versionrP rK � QueryValuer. )r< r� � registry_keyrO �hkey�filepathr r r �_search_registry� s z&WindowsRegistryFinder._search_registryNc C s� | j | � } | d k r d Sy t | � Wn t k rE d SYn XxN t � D]C \ } } | j t | � � rP t | | | | � d | �} | SqP Wd S)Nr )rZ r- r. r r r r� )r< r� r' r= rY r� r� r� r r r r> � s z WindowsRegistryFinder.find_specc C s- | j | | � } | d k r% | j Sd Sd S)zlFind module named in the registry. This method is deprecated. Use exec_module() instead. N)r> r� )r< r� r' r� r r r r? � s z!WindowsRegistryFinder.find_module) rH rG rI rJ rT rS rR rD rP rZ r> r? r r r r rJ m s rJ c @ s4 e Z d Z d Z d d � Z d d � Z e Z d S)� _LoaderBasicszSBase class of common code needed by both SourceLoader and SourcelessFileLoader.c C sX t | j | � � d } | j d d � d } | j d � d } | d k oW | d k S)z�Concrete implementation of InspectLoader.is_package by checking if the path returned by get_filename has a filename of '__init__.py'.r r� re r� rY )r+ r r& r$ )rX r� r� � filename_base� tail_namer r r r � s z_LoaderBasics.is_packagec C sP | j | j � } | d k r9 t d j | j � � � n t t | | j � d S)zExecute the module.Nz4cannot load module {!r} when get_code() returns None)rA rH r� r7 r� r� rN )rX r� r� r r r r. � s z_LoaderBasics.exec_moduleN)rH rG rI rJ r r. r� r1 r r r r r[ � s r[ c @ sj e Z d Z d d � Z d d � Z d d � Z d d � Z d d � Z d d d d � Z d d � Z d S)� SourceLoaderc C s t � d S)z�Optional method that returns the modification time (an int) for the specified path, where path is a str. Raises IOError when the path cannot be handled. N)�IOError)rX r' r r r � path_mtime� s zSourceLoader.path_mtimec C s i | j | � d 6S)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 IOError when the path cannot be handled. r� )r` )rX r' r r r � path_stats� s zSourceLoader.path_statsc C s | j | | � 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)rX r� � cache_pathrB r r r �_cache_bytecode� s z SourceLoader._cache_bytecodec C s d S)z�Optional method which writes data (bytes) to a file path (a str). Implementing this method allows for the writing of bytecode files. Nr )rX r' rB r r r rb � s zSourceLoader.set_datac C si | j | � } y | j | � } Wn: t k r^ } z t d d | �| � WYd d } ~ Xn Xt | � S)z4Concrete implementation of InspectLoader.get_source.z'source not available through get_data()rT N)r �get_datar. r� r� )rX r� r' r� �excr r r rB � s zSourceLoader.get_source� _optimizer c C s t t | | d d d d | �S)z�Return the code object compiled from source. The 'data' argument can be any object type that compile() supports. r� � dont_inheritTr� )r� �compile)rX rB r' rg r r r �source_to_code� s zSourceLoader.source_to_codec + C s� | j | � } d } y t | � } Wn t k r? d } Yn� Xy | j | � } Wn t k rg Yn� Xt | d � } y | j | � } Wn t k r� Ynj Xy" t | d | d | d | �} Wn t t f k r� Yn- Xt d | | � t | d | d | d | �S| j | � } | j | | � } t d | � t j r�| d k r�| d k r�t | | t | � � } y$ | j | | | � t d | � Wq�t k r�Yq�Xn | 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. Nr� r� rT r' z {} matches {}r� r� zcode object from {}z wrote {!r})r r� r� ra r_ r re r. r� r� r� r� r� rj r �dont_write_bytecoder� r# rd ) rX r� r� r� r� �strB � bytes_datar� � code_objectr r r rA � sN zSourceLoader.get_codeNr� ) rH rG rI r` ra rd rb rB rj rA r r r r r^ � s r^ c sp e Z d Z d Z d d � Z d d � Z d d � Z e � f d d � � Z e d d � � Z d d � Z � S)� FileLoaderzgBase file loader class which implements the loader protocol methods that require file system usage.c C s | | _ | | _ d S)zKCache the module name and the path to the file found by the finder.N)rT r' )rX r� r' r r r rY 7 s zFileLoader.__init__c C s" | j | j k o! | j | j k S)N)r rN )rX r r r r r = s zFileLoader.__eq__c C s t | j � t | j � AS)N)�hashrT r' )rX r r r �__hash__A s zFileLoader.__hash__c s t t | � j | � S)zdLoad a module from a file. This method is deprecated. Use exec_module() instead. )�superro r1 )rX r� )r r r r1 D s zFileLoader.load_modulec C s | j S)z:Return the path to the source file as found by the finder.)r' )rX r� r r r r P s zFileLoader.get_filenamec C s) t j | d � � } | j � SWd QXd S)z'Return the data from path as raw bytes.�rN)r= r> �read)rX r' rE r r r re U s zFileLoader.get_data) rH rG rI rJ rY r rq r� r1 r re r r )r r ro 2 s ro c @ s@ e Z d Z d Z d d � Z d d � Z d d d d � Z d S) r5 z>Concrete implementation of SourceLoader using the file system.c C s$ t | � } i | j d 6| j d 6S)z!Return the metadata for the path.r� r� )r- �st_mtime�st_size)rX r' rl r r r ra _ s zSourceFileLoader.path_statsc C s" t | � } | j | | d | �S)N�_mode)r� rb )rX r� r� rB r0 r r r rd d s z SourceFileLoader._cache_bytecoderw i� c C s5 t | � \ } } g } x6 | rP t | � rP t | � \ } } | j | � q Wx� t | � D]v } t | | � } y t j | � Wq^ t k r� w^ Yq^ t k r� } z t d | | � d SWYd d } ~ Xq^ Xq^ Wy! t | | | � t d | � Wn5 t k r0} z t d | | � WYd d } ~ Xn Xd S)zWrite bytes data to a file.zcould not create {!r}: {!r}Nz created {!r}) r+ r5 r r% r r �mkdir�FileExistsErrorr. r� rF ) rX r' rB rw r r� r r rf r r r rb i s& zSourceFileLoader.set_dataN)rH rG rI rJ ra rd rb r r r r r5 [ s r5 c @ s. e Z d Z d Z d d � Z d d � Z d S)r4 z-Loader which handles sourceless file imports.c C sL | j | � } | j | � } t | d | d | �} t | d | d | �S)NrT r' r� )r re r� r� )rX r� r' rB rm r r r rA � s z SourcelessFileLoader.get_codec C s d S)z'Return None as there is no source code.Nr )rX r� r r r rB � s z SourcelessFileLoader.get_sourceN)rH rG rI rJ rA rB r r r r r4 � s r4 c @ s� e Z d Z d Z d d � Z d d � Z d d � Z e d d � � Z d d � Z d d � Z d d � Z e d d � � Z d S)�ExtensionFileLoaderz]Loader for extension modules. The constructor is designed to work with FileFinder. c C s | | _ | | _ d S)N)rT r' )rX rT r' r r r rY � s z ExtensionFileLoader.__init__c C s" | j | j k o! | j | j k S)N)r rN )rX r r r r r � s zExtensionFileLoader.__eq__c C s t | j � t | j � AS)N)rp rT r' )rX r r r rq � s z ExtensionFileLoader.__hash__c C s� t | � � t t j | | j � } Wd QXt d | j � | j | � } | r| t | d � r| t | j � d g | _ n | | _ | j | _ | s� | j j d � d | _ n | S)zLoad an extension module.Nz!extension module loaded from {!r}r# re r� )rV r� r| � load_dynamicr' r� r rK r+ r# r� rH r' r$ )rX r� r� r r r r r1 � s z ExtensionFileLoader.load_modulec s0 t | j � d � t � f d d � t D� � S)z1Return True if the extension module is a package.r c 3 s | ] } � d | k Vq d S)rY Nr )r �suffix)� file_namer r r^ � s z1ExtensionFileLoader.is_package.<locals>.<genexpr>)r+ r' r_ �EXTENSION_SUFFIXES)rX r� r )r} r r � s z ExtensionFileLoader.is_packagec C s d S)z?Return None as an extension module cannot create a code object.Nr )rX r� r r r rA � s z ExtensionFileLoader.get_codec C s d S)z5Return None as extension modules have no source code.Nr )rX r� r r r rB � s z ExtensionFileLoader.get_sourcec C s | j S)z:Return the path to the source file as found by the finder.)r' )rX r� r r r r � s z ExtensionFileLoader.get_filenameN) rH rG rI rJ rY r rq r� r1 r rA rB r r r r r rz � s rz c @ s� e Z d Z d Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d S)�_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 s4 | | _ | | _ t | j � � | _ | | _ d S)N)rW r* r �_get_parent_path�_last_parent_path� _path_finder)rX rT r' � path_finderr r r rY � s z_NamespacePath.__init__c C s5 | j j d � \ } } } | d k r+ d S| d f S)z>Returns a tuple of (parent-module-name, parent-path-attr-name)r� r" r r' r# )zsyszpath)rW r$ )rX r �dotrp r r r �_find_parent_path_names� s z&_NamespacePath._find_parent_path_namesc C s& | j � \ } } t t j | | � S)N)r� rM r rZ )rX �parent_module_name�path_attr_namer r r r� � s z _NamespacePath._get_parent_pathc C s t | j � � } | | j k rx | j | j | � } | d k rl | j d k rl | j rl | j | _ ql n | | _ n | j S)N)r r� r� r� rW r� r r* )rX � parent_pathr� r r r � _recalculate� s z_NamespacePath._recalculatec C s t | j � � S)N)�iterr� )rX r r r �__iter__� s z_NamespacePath.__iter__c C s t | j � � S)N)r# r� )rX r r r �__len__� s z_NamespacePath.__len__c C s d j | j � S)Nz_NamespacePath({!r}))r7 r* )rX r r r rw s z_NamespacePath.__repr__c C s | | j � k S)N)r� )rX �itemr r r � __contains__ s z_NamespacePath.__contains__c C s | j j | � d S)N)r* r )rX r� r r r r s z_NamespacePath.appendN) rH rG rI rJ rY r� r� r� r� r� rw r� r r r r r r � s r c @ sj e Z d Z d d � Z e d d � � Z d d � Z d d � Z d d � Z d d � Z d d � Z d S)r( c C s t | | | � | _ d S)N)r r* )rX rT r' r� r r r rY s z_NamespaceLoader.__init__c C s d j | j � S)zsReturn repr for the module. The method is deprecated. The import machinery does the job itself. z<module {!r} (namespace)>)r7 rH )r< r� r r r r� s z _NamespaceLoader.module_reprc C s d S)NTr )rX r� r r r r s z_NamespaceLoader.is_packagec C s d S)Nr" r )rX r� r r r rB s z_NamespaceLoader.get_sourcec C s t d d d d d �S)Nr" z<string>r� rh T)ri )rX r� r r r rA s z_NamespaceLoader.get_codec C s d S)Nr )rX 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* r� )rX r� r r r r1 $ s z _NamespaceLoader.load_moduleN) rH rG rI rY rD r� r rB rA r. r1 r r r r r( s r( c @ s� e Z d Z d Z e d d � � Z e d d � � Z e d d � � Z e d d � � Z e d d d � � Z e d d d d � � Z e d d d � � Z d S)� PathFinderz>Meta path finder for sys.path and package __path__ attributes.c C s: x3 t j j � D]" } t | d � r | j � q q Wd S)z}Call the invalidate_caches() method on all path entry finders stored in sys.path_importer_caches (where implemented).�invalidate_cachesN)r �path_importer_cache�valuesrK r� )r< �finderr r r r� 5 s z PathFinder.invalidate_cachesc C s^ t j s t j d t � n x; t j D], } y | | � SWq& t k rQ w& Yq& Xq& Wd Sd S)zqSearch sequence of hooks for a finder for 'path'. If 'hooks' is false then use sys.path_hooks. zsys.path_hooks is emptyN)r � path_hooksr� r� r� r� )r< r' �hookr r r � _path_hooks= s zPathFinder._path_hooksc C sa | d k r t j � } n y t j | } Wn. t k r\ | j | � } | t j | <Yn X| 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" )r r4 r r� r` r� )r< r' r� r r r �_path_importer_cacheN s z PathFinder._path_importer_cachec C sq t | d � r' | j | � \ } } n | j | � } g } | d k rU t | | � St | d � } | | _ | S)Nr� )rK r� r? r� r r )r< r� r� r� r� r� r r r �_legacy_get_spec_ s zPathFinder._legacy_get_specNc C s� g } x� | D]� } t | t t f � s. q n | j | � } | d k r t | d � rm | j | | � } n | j | | � } | d k r� q n | j d k r� | S| j } | d k r� t d � � n | j | � q q Wt | d � } | | _ | Sd S)z?Find the loader or namespace_path for this module/package name.Nr> zspec missing loader) r� �str�bytesr� rK r> r� r� r r� r� r ) r< r� r' r= �namespace_path�entryr� r� r� r r r � _get_specn s( zPathFinder._get_specc C s� | d k r t j } n | j | | | � } | d k r= d S| j d k r� | j } | r� d | _ t | | | j � | _ | Sd Sn | Sd S)zbfind the module on sys.path or 'path' based on sys.path_hooks and sys.path_importer_cache.N� namespace)r r' r� r� r r r )r< r� r' r= r� r� r r r r> � s zPathFinder.find_specc C s) | j | | � } | d k r" d S| j S)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) rH rG rI rJ rD r� r� r� r� r� r> r? r r r r r� 1 s r� c @ s� e Z d Z d Z d d � Z d d � Z e Z d d � Z d d � Z d d d � Z d d � Z e d d � � Z d d � Z d 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 sz g } x4 | D], \ � } | j � f d d � | D� � q W| | _ | pO d | _ d | _ t � | _ t � | _ d S)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 | ] } | � f Vq d S)Nr )r r| )r� r r r^ � s z&FileFinder.__init__.<locals>.<genexpr>r� r Nr� )r� �_loadersr' � _path_mtime�set� _path_cache�_relaxed_path_cache)rX r' �loader_details�loadersr� r )r� r rY � s $ zFileFinder.__init__c C s d | _ d S)z Invalidate the directory mtime.r Nr� )r� )rX r r r r� � s z FileFinder.invalidate_cachesc C s; | j | � } | d k r% d g f S| j | j p7 g f S)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 )rX r� r� r r r r� � s zFileFinder.find_loaderc C s( | | | � } t | | d | d | �S)Nr� r )r )rX r r� r' r r= r� r r r r� � s zFileFinder._get_specNc C s� d } | j d � d } y" t | j p1 t j � � j } Wn t k rU d } Yn X| | j k r{ | j � | | _ n t � r� | j } | j � } n | j } | } | | k r3t | j | � } xg | j D]M \ } } d | } t | | � } t | � r� | j | | | | g | � Sq� Wt | � } n x~ | j D]s \ } } t | j | | � } t d j | � d d �| | | k r=t | � r�| j | | | d | � Sq=q=W| r�t d j | � � t | d � } | g | _ | Sd S) z}Try to find a loader for the specified module, or the namespace package portions. Returns (loader, list-of-portions).Fr� r� r rY z trying {}r� Nzpossible namespace for {}r� )r$ r- r' r r4 ru r. r� � _fill_cacher r� r� r� r r� r3 r� r5 r� r7 r r )rX r� r= � is_namespace� tail_moduler� �cache� cache_module� base_pathr| r � init_filename� full_pathr� r r r r> � sD " zFileFinder.find_specc C s | j } y t j | p! t j � � } Wn! t t t f k rK g } Yn Xt j j d � sp t | � | _ no t � } xZ | D]R } | j d � \ } } } | r� d j | | j � � } n | } | j | � q� W| | _ t j j t � r d d � | D� | _ n d S)zDFill the cache of potential modules and packages for this directory.r r� z{}.{}c S s h | ] } | j � � q Sr )r� )r �fnr r r � <setcomp>* s z)FileFinder._fill_cache.<locals>.<setcomp>N)r' r �listdirr4 �FileNotFoundError�PermissionError�NotADirectoryErrorr r r r� r� r� r7 r� �addr r� ) rX r' �contents�lower_suffix_contentsr� rT r� r| �new_namer r r r� s" zFileFinder._fill_cachec s � � f d d � } | 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 | � s! t d d | �� n � | � � S)z-Path hook for importlib.machinery.FileFinder.z only directories are supportedr' )r5 r� )r' )r< r� r r �path_hook_for_FileFinder6 s z6FileFinder.path_hook.<locals>.path_hook_for_FileFinderr )r< r� r� r )r< r� r � path_hook, s zFileFinder.path_hookc C s d j | j � S)NzFileFinder({!r}))r7 r' )rX r r r rw > s zFileFinder.__repr__)rH rG rI rJ rY r� r� r? r� r� r> r� rD r� rw r r r r r� � s - r� c @ s. e Z d Z d Z d d � Z d d � Z d S)�_ImportLockContextz$Context manager for the import lock.c C s t j � d S)zAcquire the import lock.N)r| r0 )rX r r r r\ H s z _ImportLockContext.__enter__c C s t j � d S)z<Release the import lock regardless of any raised exceptions.N)r| r} )rX �exc_type� exc_value� exc_tracebackr r r rb L s z_ImportLockContext.__exit__N)rH rG rI rJ r\ rb r r r r r� D s r� c C s[ | j d | d � } t | � | k r7 t d � � n | d } | rW d j | | � S| S)z2Resolve a relative module name to an absolute one.r� r z2attempted relative import beyond top-level packagere z{}.{})r& r# r� r7 )rT �package�level�bitsr� r r r � _resolve_nameQ s r� c C s/ | j | | � } | d k r" d St | | � S)N)r? r� )r� rT r' r� r r r �_find_spec_legacyZ s r� c C s" t j s t j d t � n | t j k } x� t j D]� } t � �] y | j } Wn6 t k r� t | | | � } | d k r� w5 n Yn X| | | | � } Wd QX| d k r5 | r| t j k rt j | } y | j } Wn t k r� | SYqX| d k r| S| Sq| Sq5 q5 Wd Sd S)zFind a module's loader.zsys.meta_path is emptyN) r � meta_pathr� r� r� rZ r� r> r� r� r� ) rT r' r= � is_reloadr� r> r� r� r� r r r � _find_specc s0 r� c C s� t | t � s- t d j t | � � � � n | d k rH t d � � n | r� t | t � sl t d � � q� | t j k r� d } t | j | � � � q� n | r� | d k r� t d � � n d S)z Verify arguments are "sane".z module name must be str, not {}re zlevel must be >= 0z __package__ not set to a stringz=Parent module {!r} not loaded, cannot perform relative importzEmpty module nameN) r� r� � TypeErrorr7 rS r� r rZ � SystemError)rT r� r� r� r r r � _sanity_check� s r� zNo module named z{!r}c C s4 d } | j d � d } | r� | t j k r> t | | � n | t j k rX t j | St j | } y | j } Wq� t k r� t d j | | � } t | d | �� Yq� Xn t | | � } | d k r� t t j | � d | �� n t | � j � } | r0t j | } t | | j d � d | � n | S)Nr� re z; {!r} is not a packagerT r� ) r$ r rZ r� r# r� �_ERR_MSGr7 r� r� r� r3 rL )rT �import_r' r � parent_moduler� r� r� r r r �_find_and_load_unlocked� s* r� c C s$ t | � � t | | � SWd QXd S)z6Find and load the module, and release the import lock.N)ry r� )rT r� r r r �_find_and_load� s r� c C s� t | | | � | d k r1 t | | | � } n t j � | t j k rW t | t � St j | } | d k r� t j � d j | � } t | d | �� n t | � | S)a2 Import and return the module based on its name, the package the call is being made from, and the level adjustment. This function represents the greatest common denominator of functionality between import_module and __import__. This includes setting __package__ if the loader did not. re Nz(import of {} halted; None in sys.modulesrT ) r� r� r| r0 r rZ r� � _gcd_importr} r7 r� r� )rT r� r� r� r� r r r r� � s r� c C s t | d � r� d | k rY t | � } | j d � t | d � rY | j | j � qY n x� | D]� } t | | � s` d j | j | � } y t | | � Wq� t k r� } z5 t | � j t � r� | j | k r� w` q� n � WYd d } ~ Xq� Xq` q` Wn | S)z�Figure out what __import__ should return. The import_ parameter is a callable which takes the name of module to import. It is required to decouple the function from assuming importlib's import implementation is desired. r# �*�__all__z{}.{}N) rK r" �remover� r� r7 rH r� r� r� r �_ERR_MSG_PREFIXrT )r� �fromlistr� r � from_namerf r r r �_handle_fromlist� s" r� c C sN | j d � } | d k rJ | d } d | k rJ | j d � d } qJ n | S)z�Calculate what __package__ should be. __package__ is not guaranteed to be defined or could be set to None to represent that its proper value is unknown. r' NrH r# r� re )ro r$ )�globalsr� r r r �_calc___package__� s r� c C s7 t t j � f } t t f } t t f } | | | g S)z_Returns a list of file-based module loaders. Each item is a tuple (loader, suffixes). )rz r| �extension_suffixesr5 r� r4 r )� extensions�source�bytecoder r r r s r c C s� | d k r t | � } n6 | d k r- | n i } t | � } t | | | � } | s� | d k rz t | j d � d � S| s� | St | � t | j d � d � } t j | j d t | j � | � Sn t | | t � Sd S)a� Import a module. The 'globals' argument is used to infer where the import is occuring from to handle relative imports. The 'locals' argument is ignored. The 'fromlist' argument specifies what should exist as attributes on the module being imported (e.g. ``from module import <fromlist>``). The 'level' argument represents the package location to import from in a relative import (e.g. ``from ..pkg import mod`` would have a 'level' of 2). re Nr� )r� r� r� r# r rZ rH r� ) rT r� �localsr� r� r� �globals_r� �cut_offr r r � __import__ s #(r� c C sD t j | � } | d k r. t d | � � n t | � } | j � S)Nzno built-in module named )r: r> r� r� r3 )rT r� r� r r r �_builtin_from_name5 s r� c C s� | a | a t j j r! t a n t a t t � } x� t j j � D]y \ } } t | | � rC | t j k rv t } n t j | � rC t } n qC t | | � } t | � } | j | � qC qC Wt j t } xI d D]A } | t j k r� t | � } n t j | } t | | | � q� Wd d g f d d d g f f } x� | D]~ \ } } t d d � | D� � slt � | d } | t j k r�t j | } PqAy t | � } PWqAt k r�wAYqAXqAWt d � � t | d | � t | d | � t | d d j | � � y t d � } Wn t k r2d } Yn Xt | d | � t d � } t | d | � | d k r�t d � } t | d | � n t | d t � � t j t j � � | d k r�t j d � d t k r�d t _ q�n d S)z�Setup importlib by importing needed built-in modules and injecting them into the global namespace. As sys is needed for sys.modules access and _imp is needed to load built-in modules, those two modules must be explicitly passed in. r= r� �builtinsr� �posix�/�nt�\c s s! | ] } t | � d k Vq d S)r N)r# )r r� r r r r^ i s z_setup.<locals>.<genexpr>re z importlib requires posix or ntr r r r" rf Nr� �winregrK r z.pywz_d.pydT)z_ioz _warningszbuiltinszmarshal)!r| r r� r� r� r r� rS rZ �itemsr� r� r: r� rE r$ r� r+ rH r� rL �allrv r� r r r~ r� r� r� r rJ rR )� sys_module� _imp_module� module_typerT r� r� r� r� � 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 s� t | | � t � } t j j t j | � g � t j j t � t j j t � t j d k rt t j j t � n t j j t � d S)z2Install importlib as the implementation of import.r� N)r� r r r� r� r� r� r� r r: rE r rH rJ r� )r� r� �supported_loadersr r r �_install� s r� )zwinzcygwinzdarwin)\rJ r r r r r r+ r- r2 r3 r5 rF rR rU rS �__code__r� rV r rn ru rc rd rx ry r{ r� r� r r� r r �_RAW_MAGIC_NUMBERr� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r r� �objectr r r$ r� r9 r: rE rJ r[ r^ ro r5 r4 r~ rz r r( r� r� r� r� r� r� r� r� r� r� r� r� r� r� r r� r� r� r� r r r r �<module> s� D r 7 $j ?-�FG?n)+99&�� ( # W
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