Return data files for package *name* with extensions in *extlist*

def get_package_data(name, extlist):
    """Return data files for package *name* with extensions in *extlist*"""
    flist = []
    # Workaround to replace os.path.relpath (not available until Python 2.6):
    offset = len(name)+len(os.pathsep)
    for dirpath, _dirnames, filenames in os.walk(name):
        for fname in filenames:
            if not fname.startswith('.') and osp.splitext(fname)[1] in extlist:
                flist.append(osp.join(dirpath, fname)[offset:])
    return flist