def unsubscribe(id_or_symbols):
    """
    取消订阅合约行情。取消订阅会导致合约池内合约的减少，如果当前合约池中没有任何合约，则策略直接退出。

    :param id_or_symbols: 标的物
    :type id_or_symbols: :class:`~Instrument` object | `str` | List[:class:`~Instrument`] | List[`str`]
    """
    current_universe = Environment.get_instance().get_universe()
    if isinstance(id_or_symbols, six.string_types):
        order_book_id = instruments(id_or_symbols).order_book_id
        current_universe.discard(order_book_id)
    elif isinstance(id_or_symbols, Instrument):
        current_universe.discard(id_or_symbols.order_book_id)
    elif isinstance(id_or_symbols, Iterable):
        for item in id_or_symbols:
            i = assure_order_book_id(item)
            current_universe.discard(i)
    else:
        raise RQInvalidArgument(_(u"unsupported order_book_id type"))

    Environment.get_instance().update_universe(current_universe)
def unsubscribe ( id_or_symbols ) : current_universe = Environment . get_instance ( ) . get_universe ( ) if isinstance ( id_or_symbols , six . string_types ) : order_book_id = instruments ( id_or_symbols ) . order_book_id current_universe . discard ( order_book_id ) elif isinstance ( id_or_symbols , Instrument ) : current_universe . discard ( id_or_symbols . order_book_id ) elif isinstance ( id_or_symbols , Iterable ) : for item in id_or_symbols : i = assure_order_book_id ( item ) current_universe . discard ( i ) else : raise RQInvalidArgument ( _ ( u"unsupported order_book_id type" ) ) Environment . get_instance ( ) . update_universe ( current_universe )
取消订阅合约行情。取消订阅会导致合约池内合约的减少，如果当前合约池中没有任何合约，则策略直接退出。

    :param id_or_symbols: 标的物
    :type id_or_symbols: :class:`~Instrument` object | `str` | List[:class:`~Instrument`] | List[`str`]