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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 tablespace_alter(name, user=None, host=None, port=None, maintenance_db=None,
                     password=None, new_name=None, new_owner=None,
                     set_option=None, reset_option=None, runas=None):
    '''
    Change tablespace name, owner, or options.

    CLI Example:

    .. code-block:: bash

        salt '*' postgres.tablespace_alter tsname new_owner=otheruser
        salt '*' postgres.tablespace_alter index_space new_name=fast_raid
        salt '*' postgres.tablespace_alter test set_option="{'seq_page_cost': '1.1'}"
        salt '*' postgres.tablespace_alter tsname reset_option=seq_page_cost

    .. versionadded:: 2015.8.0
    '''
    if not any([new_name, new_owner, set_option, reset_option]):
        return True  # Nothing todo?

    queries = []

    if new_name:
        queries.append('ALTER TABLESPACE "{0}" RENAME TO "{1}"'.format(
                       name, new_name))
    if new_owner:
        queries.append('ALTER TABLESPACE "{0}" OWNER TO "{1}"'.format(
                       name, new_owner))
    if set_option:
        queries.append('ALTER TABLESPACE "{0}" SET ({1} = {2})'.format(
                       name, set_option.keys()[0], set_option.values()[0]))
    if reset_option:
        queries.append('ALTER TABLESPACE "{0}" RESET ({1})'.format(
                       name, reset_option))

    for query in queries:
        ret = _psql_prepare_and_run(['-c', query],
                                    user=user, host=host, port=port,
                                    maintenance_db=maintenance_db,
                                    password=password, runas=runas)
        if ret['retcode'] != 0:
            return False

    return True