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D ]0}|�d�}|�r\|�d��r��q\| �|� �q\W d � qn1 �s�0 Y qn| S ) a� Extend a package's path.
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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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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,
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d = os.path.dirname(sys.modules[package].__file__)
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The first form is intended for backward compatibility only. It assumes that
some part of the dotted name is a package, and the rest is an object
somewhere within that package, possibly nested inside other objects.
Because the place where the package stops and the object hierarchy starts
can't be inferred by inspection, repeated attempts to import must be done
with this form.
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provision of a single colon: the dotted name to the left of the colon is a
package to be imported, and the dotted name to the right is the object
hierarchy within that package. Only one import is needed in this form. If
it ends with the colon, then a module object is returned.
The function will return an object (which might be a module), or raise one
of the following exceptions:
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