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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 get_table_key(key, d, fallback=""):
 """ Try to get a table name from a data table :param str key: Key to try first :param dict d: Data table :param str fallback: (optional) If we don't find a table name, use this as a generic name fallback. :return str var: Data table name """

    try:
        var = d[key]
        return var
    except KeyError:
        logger_misc.info("get_variable_name_table: KeyError: missing {}, use name: {}".format(key, fallback))
        return fallback