Plan 9 from Bell Labs’s /usr/web/sources/contrib/bichued/root/sys/lib/python/pkgutil.pyc

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


�
��c@sadZddkZddkZddkZddkZddklZdddddd	d
ddd
g
Zd�Zd�Z	dddd�Zddd�Zdd�Z
e	e
�Z
d
dd��YZddd��YZy<ddkZddklZdd�Ze
iee�Wnej
onXd�Zdd�Zd�Zd�Zd�ZdS(sUtilities to support packages.i�N(t
ModuleTypetget_importertiter_importerst
get_loadertfind_loadert
walk_packagestiter_modulestImpImportert	ImpLoadert	read_codetextend_pathcCsPddk}|id�}|ti�jodSn|id�|i|�S(Ni�i(tmarshaltreadtimpt	get_magictNonetload(tstreamRtmagic((s/sys/lib/python/pkgutil.pyR	s
cs~h���fd�}y�i|_Wnttfj
onXd��fd���i|_�i|_�|_|S(s/Make a trivial single-dispatch generic functioncs�|d}y
|i}Wntj
ot|�}nXy
|i}Wn\tj
oPy*d|tfd��Y}|id}Wq�tj
otf}q�XnXx=|D](}|�jo�|||�Sq�q�W�||�SdS(NitclscBseZRS((t__name__t
__module__(((s/sys/lib/python/pkgutil.pyR,si(t	__class__tAttributeErrorttypet__mro__tobjectt	TypeError(targstkwtobRtmrott(tfunctregistry(s/sys/lib/python/pkgutil.pytwrapper"s$



cs/|djo��fd�Sn|��<|S(Ncs
��|�S(((tf(tregisterttyp(s/sys/lib/python/pkgutil.pyt<lambda>=s(R(R&R!(R%R"(R&s/sys/lib/python/pkgutil.pyR%;s

N(RRRRt__dict__t__doc__R%(R!R#((R%R"R!s/sys/lib/python/pkgutil.pyt
simplegenerics	tc

cs3hd�}x t||�D]\}}}|||fV|o�yt|�Wn^tj
o"|dj	o||�q'q+tj
o%|dj	o||�q'�q+Xtti|dd�pg}g}|D]}||�p||q�q�~}x't||d|�D]}	|	VqWqqWdS(s�Yields (module_loader, name, ispkg) for all modules recursively
    on path, or, if path is None, all accessible modules.

    'path' should be either None or a list of paths to look for
    modules in.

    'prefix' is a string to output on the front of every module name
    on output.

    Note that this function must import all *packages* (NOT all
    modules!) on the given path, in order to access the __path__
    attribute to find submodules.

    'onerror' is a function which gets called with one argument (the
    name of the package which was being imported) if any exception
    occurs while trying to import a package.  If no onerror function is
    supplied, ImportErrors are caught and ignored, while all other
    exceptions are propagated, terminating the search.

    Examples:

    # list all modules python can access
    walk_packages()

    # list all submodules of ctypes
    walk_packages(ctypes.__path__, ctypes.__name__+'.')
    cSs#||jotSnt||<dS(N(tTrue(tptm((s/sys/lib/python/pkgutil.pytseends
t__path__t.N(	Rt
__import__tImportErrorRt	ExceptiontgetattrtsystmodulesR(
tpathtprefixtonerrorR/timportertnametispkgt_[1]R-titem((s/sys/lib/python/pkgutil.pyRGs&

 2ccs�|djo
t�}ntt|�}h}xW|D]O}xFt||�D]5\}}||jod||<|||fVqLqLWq6WdS(s&Yields (module_loader, name, ispkg) for all submodules on path,
    or, if path is None, all top-level modules on sys.path.

    'path' should be either None or a list of paths to look for
    modules in.

    'prefix' is a string to output on the front of every module name
    on output.
    iN(RRtmapRtiter_importer_modules(R8R9t	importerstyieldedtiR<R=((s/sys/lib/python/pkgutil.pyR�s



cCs%t|d�pgSn|i|�S(NR(thasattrR(R;R9((s/sys/lib/python/pkgutil.pyRA�scBs2eZdZdd�Zdd�Zdd�ZRS(s�PEP 302 Importer that wraps Python's "classic" import algorithm

    ImpImporter(dirname) produces a PEP 302 importer that searches that
    directory.  ImpImporter(None) produces a PEP 302 importer that searches
    the current sys.path, plus any modules that are frozen or built-in.

    Note that ImpImporter does not currently support being used by placement
    on sys.meta_path.
    cCs
||_dS(N(R8(tselfR8((s/sys/lib/python/pkgutil.pyt__init__�scCs�|id�d}||jo|idjodSn|idjo
d}ntii|i�g}yti||�\}}}Wntj
odSnXt||||�S(NR1i�(	tsplitR8RtostrealpathR
tfind_moduleR3R(RFtfullnameR8tsubnametfiletfilenametetc((s/sys/lib/python/pkgutil.pyRK�s
	R+c
csg|idjptii|i�odSnh}ddk}ti|i�}|i�x|D]�|i|�}|djp
||joqdntii|i|�}t	}|ontii|�o[d|joN|}xEti|�D]-}|i|�}	|	djot
}Pq��dn|o*d|jod||<|||fVqdqdWdS(Ni�RGR1i(R8RRItisdirtinspecttlistdirtsortt
getmodulenametjointFalseR,(
RFR9RCRRt	filenamestfntmodnameR8R=RM((s/sys/lib/python/pkgutil.pyR�s2'
(
	
N(RRR)RRGRKR(((s/sys/lib/python/pkgutil.pyR�s	cBs{eZdZdZZd�Zd�Zd�Zd�Z	d�Z
d�Zdd�Zdd�Z
d	�Zdd
�ZRS(sBPEP 302 Loader that wraps Python's "classic" import algorithm
    cCs(||_||_||_||_dS(N(RNRORLRP(RFRLRNRORP((s/sys/lib/python/pkgutil.pyRG�s			cCsR|i�z%ti||i|i|i�}Wd|io|ii�nX|S(N(t_reopenR
tload_moduleRNRORPtclose(RFRLtmod((s/sys/lib/python/pkgutil.pyR\�s
%
cCst|d�i�S(Ntrb(topenR(RFtpathname((s/sys/lib/python/pkgutil.pytget_data�scCs�|ioy|iiol|id}|tijot|id�|_q�|titifjot|id�|_q�ndS(NitrUR_(	RNtclosedRPR
t	PY_SOURCER`ROtPY_COMPILEDtC_EXTENSION(RFtmod_type((s/sys/lib/python/pkgutil.pyR[�s
cCsK|djo
|i}n.||ijotd|i|f��n|S(Ns,Loader for module %s cannot handle module %s(RRLR3(RFRL((s/sys/lib/python/pkgutil.pyt	_fix_names

cCs#|i|�}|idtijS(Ni(RiRPR
t
PKG_DIRECTORY(RFRL((s/sys/lib/python/pkgutil.pyt
is_package	scCs�|i|�}|idjo�|id}|tijo+|i|�}t||id�|_q�|ti	jo5|i
�zt|i�|_Wd|ii
�Xq�|tijo|i�i�|_q�n|iS(Nitexec(RitcodeRRPR
Ret
get_sourcetcompileRORfR[R	RNR]Rjt
_get_delegatetget_code(RFRLRhtsource((s/sys/lib/python/pkgutil.pyRq
s

cCs|i|�}|idjo�|id}|tijo5|i�z|ii�|_Wd|ii	�Xq�ti
joQtii
|id �o3t|id d�}|i�|_|i	�q��tijo|i�i�|_q�|iS(Nii�Rc(RiRrRRPR
ReR[RNRR]RfRIR8texistsROR`RjRpRn(RFRLRhR$((s/sys/lib/python/pkgutil.pyRns 

cCst|i�id�S(NRG(RRORK(RF((s/sys/lib/python/pkgutil.pyRp2scCs||i|�}|id}|idtijo|i�i�Sn2|idtititifjo|i	SndS(Ni(RiRPR
RjRptget_filenameReRfRgROR(RFRLRh((s/sys/lib/python/pkgutil.pyRt5s
&N(RRR)RRmRrRGR\RbR[RiRkRqRnRpRt(((s/sys/lib/python/pkgutil.pyR�s
							(tzipimporterc	cseti|ii�}|i�|i}t|�}h}ddk}x|D]}|i|�pqNn||i	t
i�}t|�djoJ|did�o6|d|jo!d||d<|dtfVq�nt|�djoqNn|i
|d�}|djoqNn|o7d|jo*||jod||<||tfVqNqNWdS(Ni�iis__init__.pyiRGR1(t	zipimportt_zip_directory_cachetarchivetkeysRTR9tlenRRt
startswithRHRItsepR,RURW(	R;R9tdirlistt_prefixtplenRCRRRYRZ((s/sys/lib/python/pkgutil.pytiter_zipimport_modulesCs.
	'
!
cCs�yti|}Wngtj
o[x>tiD]-}y||�}PWq,tj
oq,Xq,Wd}tii||�nX|djo0yt|�}Wq�tj
o
d}q�Xn|S(s�Retrieve a PEP 302 importer for the given path item

    The returned importer is cached in sys.path_importer_cache
    if it was newly created by a path hook.

    If there is no importer, a wrapper around the basic import
    machinery is returned. This wrapper is never inserted into
    the importer cache (None is inserted instead).

    The cache (or part of it) can be cleared manually if a
    rescan of sys.path_hooks is necessary.
    N(R6tpath_importer_cachetKeyErrort
path_hooksR3Rt
setdefaultR(t	path_itemR;t	path_hook((s/sys/lib/python/pkgutil.pyRfs$

	
ccs�|id�otd��nd|jo^di|id�d �}|tijot|�ntti|dd�pg}n#xti	D]}|Vq�Wti
}x|D]}t|�Vq�Wd|jot�VndS(s�Yield PEP 302 importers for the given module name

    If fullname contains a '.', the importers will be for the package
    containing fullname, otherwise they will be importers for sys.meta_path,
    sys.path, and Python's "classic" import machinery, in that order.  If
    the named module is in a package, that package is imported as a side
    effect of invoking this function.

    Non PEP 302 mechanisms (e.g. the Windows registry) used by the
    standard import machinery to find files in alternative locations
    are partially supported, but are searched AFTER sys.path. Normally,
    these locations are searched BEFORE sys.path, preventing sys.path
    entries from shadowing them.

    For this to cause a visible difference in behaviour, there must
    be a module or package name that is accessible via both sys.path
    and one of the non PEP 302 file system mechanisms. In this case,
    the emulation will find the former version, while the builtin
    import mechanism will find the latter.

    Items of the following types can be affected by this discrepancy:
        imp.C_EXTENSION, imp.PY_SOURCE, imp.PY_COMPILED, imp.PKG_DIRECTORY
    R1s#Relative module names not supportedi�R0N(
R{R3RVRHR6R7R2R5Rt	meta_pathR8RR(RLtpkgR8R;R?((s/sys/lib/python/pkgutil.pyR�s 
$
		
cCs{|tijoti|}nt|t�o:|}t|dd�}|dj	o|Sn|i}n|}t|�S(sDGet a PEP 302 "loader" object for module_or_name

    If the module or package is accessible via the normal import
    mechanism, a wrapper around the relevant part of that machinery
    is returned.  Returns None if the module cannot be found or imported.
    If the named module is not already imported, its containing package
    (if any) is imported, in order to establish the package __path__.

    This function uses iter_importers(), and is thus subject to the same
    limitations regarding platform-specific special import locations such
    as the Windows registry.
    t
__loader__N(R6R7t
isinstanceRR5RRR(tmodule_or_nametmoduletloaderRL((s/sys/lib/python/pkgutil.pyR�s


cCs?x8t|�D]*}|i|�}|dj	o|Sq
q
WdS(shFind a PEP 302 "loader" object for fullname

    If fullname contains dots, path must be the containing package's __path__.
    Returns None if the module cannot be found or imported. This function uses
    iter_importers(), and is thus subject to the same limitations regarding
    platform-specific special import locations such as the Windows registry.
    N(RRKR(RLR;R�((s/sys/lib/python/pkgutil.pyR�s

c
Cs�t|t�p|Sntii|id��}tii|id��}|tid}dtid}|}x\tiD]Q}t|t�ptii	|�oq�ntii||�}tii||�}||jo$tii
|�o|i|�ntii||�}	tii
|	�o�yt|	�}
Wn/t
j
o#}tiid|	|f�q�XxI|
D]A}|id�}|p|id�oqn|i|�qW|
i�q�q�W|S(s�Extend a package's path.

    Intended use is to place the following code in a package's __init__.py:

        from pkgutil import extend_path
        __path__ = extend_path(__path__, __name__)

    This will add to the package's __path__ all subdirectories of
    directories on sys.path named after the package.  This is useful
    if one wants to distribute different parts of a single logical
    package as multiple directories.

    It also looks for *.pkg files beginning where * matches the name
    argument.  This feature is similar to *.pth files (see site.py),
    except that it doesn't special-case lines starting with 'import'.
    A *.pkg file is trusted at face value: apart from checking for
    duplicates, all entries found in a *.pkg file are added to the
    path, regardless of whether they are exist the filesystem.  (This
    is a feature.)

    If the input path is not a list (as is the case for frozen
    packages) it is returned unchanged.  The input path is not
    modified; an extended copy is returned.  Items are only appended
    to the copy at the end.

    It is assumed that sys.path is a sequence.  Items of sys.path that
    are not (unicode or 8-bit) strings referring to existing
    directories are ignored.  Unicode items of sys.path that cause
    errors when used as filenames may cause this function to raise an
    exception (in line with os.path.isdir() behavior).
    R1R�RGtpysCan't open %s: %s
s
t#(R�tlistRIR8RVRHtextsepR6t
basestringRQtisfiletappendR`tIOErrortstderrtwritetrstripR{R](
R8R<tpnametsnamet	sname_pkgtinit_pytdirtsubdirtinitfiletpkgfileR$tmsgtline((s/sys/lib/python/pkgutil.pyR
�s<!
% (((R)RIR6R
tos.pathttypesRt__all__R	R*RRRRARRRvRuR�R%R3RRRRR
(((s/sys/lib/python/pkgutil.pys<module>s8	
	(:>_	")		

Bell Labs OSI certified Powered by Plan 9

(Return to Plan 9 Home Page)

Copyright © 2021 Plan 9 Foundation. All Rights Reserved.
Comments to webmaster@9p.io.