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    Problem getting data and placing order in live IB

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    • Steven Johnson
      Steven Johnson last edited by

      I AM subscribed to IB live data. I have no problem getting live data when I use IB's native python API - IBJts. However when I try to use Backtrader and ran the following code, I got UNSUBSCRIBED status and can't place order. What am I missing?

      Server Version: 76
      TWS Time at connection:20200227 21:37:34 EST
      ***** DATA NOTIF: DELAYED
      ***** DATA NOTIF: NOTSUBSCRIBED

      Process finished with exit code 0

      from __future__ import (absolute_import, division, print_function,
                              unicode_literals)
      
      import backtrader as bt
      
      
      class St(bt.Strategy):
          def logdata(self):
              txt = []
              txt.append('{}'.format(len(self)))
              txt.append('{}'.format(self.data.datetime.datetime(0).isoformat()))
              txt.append('{:.2f}'.format(self.data.open[0]))
              txt.append('{:.2f}'.format(self.data.high[0]))
              txt.append('{:.2f}'.format(self.data.low[0]))
              txt.append('{:.2f}'.format(self.data.close[0]))
              txt.append('{:.2f}'.format(self.data.volume[0]))
              print(','.join(txt))
      
          data_live = False
      
          def notify_data(self, data, status, *args, **kwargs):
              print('*' * 5, 'DATA NOTIF:', data._getstatusname(status), *args)
              if status == data.LIVE:
                  self.data_live = True
      
          def notify_order(self, order):
              if order.status == order.Completed:
                  buysell = 'BUY ' if order.isbuy() else 'SELL'
                  txt = '{} {}@{}'.format(buysell, order.executed.size,
                                          order.executed.price)
                  print(txt)
      
          bought = 0
          sold = 0
      
          def next(self):
              self.logdata()
              # if not self.data_live:
              #     return
              #
              # if not self.bought:
              #     self.bought = len(self)  # keep entry bar
              #     self.buy()
              # elif not self.sold:
              #     if len(self) == (self.bought + 3):
              #         self.sell()
      
      
      def run(args=None):
          cerebro = bt.Cerebro(stdstats=False)
          store = bt.stores.IBStore(port=7497)
      
          data = store.getdata(dataname='TWTR', timeframe=bt.TimeFrame.Ticks)
          cerebro.resampledata(data, timeframe=bt.TimeFrame.Seconds, compression=10)
      
          cerebro.broker = store.getbroker()
      
          cerebro.addstrategy(St)
          cerebro.run()
      
      
      if __name__ == '__main__':
          run()
      
      1 Reply Last reply Reply Quote 0
      • vladisld
        vladisld last edited by

        Comparing TWS API logs for both scenarios would probably help.

        1 Reply Last reply Reply Quote 0
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