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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 _query_uncompressed(options, collection_name, num_to_skip, num_to_return, query, field_selector, opts, check_keys=False):
 """Internal query message helper."""

    op_query, max_bson_size = _query(
        options,
        collection_name,
        num_to_skip,
        num_to_return,
        query,
        field_selector,
        opts,
        check_keys)
    rid, msg = __pack_message(2004, op_query)
    return rid, msg, max_bson_size