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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 _sid_subdir_path(sid):
 """ Format subdir path to limit the number directories in any given subdirectory to 100. The number in each directory is designed to support at least 100000 equities. Parameters sid : int Asset identifier. Returns ------- out : string A path for the bcolz rootdir, including subdirectory prefixes based on the padded string representation of the given sid. e.g. 1 is formatted as 00/00/000001.bcolz """

    padded_sid = format(sid, '06')
    return os.path.join(
        # subdir 1 00/XX
        padded_sid[0:2],
        # subdir 2 XX/00
        padded_sid[2:4],
        "{0}.bcolz".format(str(padded_sid))
    )