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cerebro.addbroker()?



  • Hi all,

    I have created a custom broker by modifying a couple of functions from
    /backtrader/brokers/bbroker.py
    (calling the new file mybbroker.py and putting it in my own code directory, -- not in the same folder as the original bbroker.py).

    Now my question is: how can I call this one to be used instead?

    I tried to add a line

    import mybroker
    

    on top of the code, and though the import happens, it's still the original broker that gets used when I do:

    import backtrader
    import mybroker
    
    cerebro   = backtrader.Cerebro(maxcpus = 1)
    cerebro.addobserver(backtrader.observers.Broker)
    cerebro.addstrategy(StrategyBaseTradingplusplus)        
    data      = PandasDataStrat1(dataname     = dataframe, 
                                         datetime     = -1, 
                                         open         = -1, 
                                         high         = -1, 
                                         low          = -1, 
                                         close        = -1,
                                         volume       = -1,
                                         openinterest = None)
    cerebro.adddata(data)
            
    cerebro.broker.setcash(100000.0)
    cerebro.broker.setcommission(commission = 0.2, 
                                  margin     = 1000.0, 
                                  mult       = 100.0)
    cerebro.broker.set_filler(backtrader.broker.filler.FixedBarPerc(perc = 100.0))
                   
    cerebro.run()
    
    

    So my question is: How to use my custom broker?



  • cerebro.setbroker(<instance of your broker class>)
    

  • administrators

    Why don't you use what's already documented?

    Example: Docs - Live Trading - Oanda v1.0

    The Cerebro reference says what setbroker does (can also be reached via the broker property): Docs - Cerebro



  • Thanks, worked like a charm. As usual, thank you for the prompt answer and the references;)


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