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Starting and stopping market data using ticker object

 

Hi all,
First thanks for resurrecting the forum following Ewald's sad passing. He was very kind and helpful to me when i was getting my head around Insync.
?
My problem now though is that I need to both start streaming a ticker, and also to stop it later.
?
I can start it no problem:
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? ? stock_symbols = ['SPY', 'AAPL'],
? ? stocks = [Stock(symbol, 'SMART', 'USD') for symbol in stock_symbols]
? ? for stock in stocks:
? ? ? ? ib.qualifyContracts(*stocks)
? ? ? ? ticker = ib.reqMktData(stock, '', False, False)
?
..but have been unable to selectively cancel a ticker, ie cancel AAPL and keep SPY streaming. This seems to be because there is no reqID fround to identify the tickers.
?
Any help would be much appreciated.
Thanks
Dan
 

Dan, I use this. I don't know 100% if it works as I didn't bother to test since it was not mission critical for my use case:

def req_market_data_initial_contracts(previous_options_contracts=None):
? ? active_tickers_temp = {}
? ? for each_contract in previous_options_contracts:
? ? ? ? active_tickers_temp[each_contract.localSymbol] = ib.reqMktData(each_contract, "", False, False)
? ? ib.sleep(10)

And then when I need to cancel any of these:

? ? ? for contract_item in previous_options_contrs:
? ? ? ? ? ? if contract_item not in current_options_contracts:
? ? ? ? ? ? ? ? ib.cancelMktData(contract_item)
? ? ? ? ? ? ? ? ib.cancelRealTimeBars(opt_5_sec_bars_dict.get(contract_item.localSymbol))
? ? ? ? ? ? ? ? print_log(msg=f"Cancelled bars for {contract_item.localSymbol} during re-alignment of spx")
? ? ? ? ? ? ? ? active_tickers.pop(contract_item.localSymbol, None)
? ? ? ? ? ? ? ? opt_5_sec_bars_dict.pop(contract_item.localSymbol, None)


On Wed, Aug 21, 2024 at 12:30?PM Daniel Stewart via <danieljstewart=hotmail.com@groups.io> wrote:
Hi all,
First thanks for resurrecting the forum following Ewald's sad passing. He was very kind and helpful to me when i was getting my head around Insync.
?
My problem now though is that I need to both start streaming a ticker, and also to stop it later.
?
I can start it no problem:
?
? ? stock_symbols = ['SPY', 'AAPL'],
? ? stocks = [Stock(symbol, 'SMART', 'USD') for symbol in stock_symbols]
? ? for stock in stocks:
? ? ? ? ib.qualifyContracts(*stocks)
? ? ? ? ticker = ib.reqMktData(stock, '', False, False)
?
..but have been unable to selectively cancel a ticker, ie cancel AAPL and keep SPY streaming. This seems to be because there is no reqID fround to identify the tickers.
?
Any help would be much appreciated.
Thanks
Dan
 

Thanks!

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