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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 _make_canonical_query_string(parsed):
 """ Return the canonical query string for a parsed URL. @param parsed: The parsed URL from which to extract the canonical query string. @type parsed: L{urlparse.ParseResult} @return: The canonical query string. @rtype: L{str} """

    query_params = urlparse.parse_qs(parsed.query, keep_blank_values=True)
    sorted_query_params = sorted((k, v)
                                 for k, vs in query_params.items()
                                 for v in vs)
    return urllib.urlencode(sorted_query_params)