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rYn Xd! d Z d d" d Z d# d Z d$ d Z! d% d Z" d& d Z# d S)'z Utilities to support packages. )singledispatchN)
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rS | j | } | d k r< d St j j | | SYn X| | Sd S)z'Return the finder-specific module spec.N) find_specAttributeError find_module importlibutilspec_from_loader)findernamer loader r ,/opt/alt/python35/lib64/python3.5/pkgutil.py _get_spec s
r c C s] d d l } | j d } | t j j k rC | t j j k rC d S| j d | j | S)Nr )marshalreadr r MAGIC_NUMBER_BACKCOMPAT_MAGIC_NUMBERload)streamr magicr r r r
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r | d k r | | n Yq Xt t j | d d p g } f d d | D } t | | d | Ed Hq Wd S)a Yields (module_finder, name, ispkg) for all modules recursively
on path, or, if path is None, all accessible modules.
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modules in.
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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__+'.')
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c c s | d k r t } n t t | } i } xR | D]J } xA t | | D]0 \ } } | | k rJ d | | <| | | f VqJ Wq4 Wd S)a& Yields (module_finder, name, ispkg) for all submodules on path,
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modules in.
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rS c @ sC e Z d Z d Z d d d Z d d d Z d d d Z d S)
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on sys.meta_path.
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Nc C s? t j d t t | | _ | | _ | | _ | | _ d S)Nz5This emulation is deprecated, use 'importlib' instead)rN rT rU rS r[ r\ rZ r] )rV rZ r[ r\ r] r r r r= s zImpLoader.__init__c C sM | j z% t j | | j | j | j } Wd | j rH | j j X| S)N)_reopenrM load_moduler[ r\ r] close)rV rZ modr r r rc s
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} t | d k r | d j d r | d | k r d | | d <| | d d f Vt | d k r qD | j | d } | d k rqD | rD d | k rD | | k rD d | | <| | d f VqD Wd S) Nr ri r7 z __init__.pyTr= r+ F) sorted zipimport_zip_directory_cachearchiver3 lenr@
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ri Yq+ Xq+ Wd } Yn X| S)zRetrieve a finder for the given path item
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if it was newly created by a path hook.
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rescan of sys.path_hooks is necessary.
N)r0 path_importer_cacheKeyError
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setdefaultr- )Z path_itemr5 path_hookr r r r s
c c s | j d r* d j | } t | d | k r} | j d d } t j | } t | d d } | d k r d Sn t j Ed Ht j } x | D] } t
| Vq Wd S)a Yield finders for the given module name
If fullname contains a '.', the finders will be for the package
containing fullname, otherwise they will be all registered top level
finders (i.e. those on both sys.meta_path and sys.path_hooks).
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effect of invoking this function.
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D]; } | j d } | s| j d rq| j | qWWd QRXq W| S) a Extend a package's path.
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from pkgutil import extend_path
__path__ = extend_path(__path__, __name__)
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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).
z.pkgNr+ r r zCan't open %s: %s
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j | } | j | S)af Get a resource from a package.
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argument should be the name of a package, in standard module format
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filename, using '/' as the path separator. The parent directory name '..'
is not allowed, and nor is a rooted name (starting with a '/').
The function returns a binary string, which is the contents of the
specified resource.
For packages located in the filesystem, which have already been imported,
this is the rough equivalent of
d = os.path.dirname(sys.modules[package].__file__)
data = open(os.path.join(d, resource), 'rb').read()
If the package cannot be located or loaded, or it uses a PEP 302 loader
which does not support get_data(), then None is returned.
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