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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/python34/lib64/python3.4/pkgutil.py _get_spec s
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r | d k r | | n Yq Xt t j | d d p g } f d d | D } t | | d | Dd Hq q Wd S)a Yields (module_loader, name, ispkg) for all modules recursively
on path, or, if path is None, all accessible modules.
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on output.
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# 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 } xU | D]M } xD t | | D]3 \ } } | | k rJ d | | <| | | f VqJ qJ Wq4 Wd S)a& Yields (module_loader, name, ispkg) for all submodules on path,
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rR 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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ri Yq+ Xq+ Wd } Yn X| S)a Retrieve a PEP 302 importer for the given path item
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rescan of sys.path_hooks is necessary.
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c c s | j d r- d j | } t | n d | k r | j d d } t j | } t | d d } | d k r d Sn t j Dd Ht j } x | D] } t
| Vq Wd S)a Yield PEP 302 importers for the given module name
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c C s | t j k r/ t j | } | d k r/ d Sn t | t r | } t | d d } | d k rf | St | d d d k r d S| j } n | } t | S)a Get a PEP 302 "loader" object for module_or_name
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D]> } | j d } | s| j d rqn | j | qWWd QXq q W| S) a Extend a package's path.
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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.
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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
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z.pkgNr* r r zCan't open %s: %s
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j 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
(foo.bar). The resource argument should be in the form of a relative
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
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