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r� |dk r|||j� n� Y qX ttj|j dd�p�g } � fdd�| D �} t | |jd |�E dH qdS )a� Yields ModuleInfo for all modules recursively
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rf Y q.X q.d}Y nX |S )z�Retrieve a finder for the given path item
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D ]0}|�d�}|�r\|�d��r��q\| �|� �q\W 5 Q R X qp| S ) a� Extend a package's path.
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__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.)
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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
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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.
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this is the rough equivalent of
d = os.path.dirname(sys.modules[package].__file__)
data = open(os.path.join(d, resource), 'rb').read()
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which does not support get_data(), then None is returned.
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