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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def subdir_findall(dir, subdir):
 """ Find all files in a subdirectory and return paths relative to dir This is similar to (and uses) setuptools.findall However, the paths returned are in the form needed for package_data """

    strip_n = len(dir.split('/'))
    path = '/'.join((dir, subdir))
    return ['/'.join(s.split('/')[strip_n:]) for s in setuptools.findall(path)]