I know that in ibpy I could place order to create a new order:
self._tws.placeOrder(order_id,contract, order)
However, suppose I know want to change the limit price of some already placed order. Is there anything like:?
self._tws.editOrder(order_id,contract, order)
Or simply use place order with the specific order_id is ok?
You just call placeOrder again with the same orderId but with changed data. You can only change certain fields but m_lmtPrice is easy.
From the docs,
Link http://interactivebrokers.github.io/tws-api/modifying_orders.html#gsc.tab=0