order.ref keeps increasing after new cerebro instantiation

[nimrare]

Hi,

I am a new backtrader user and I really love it so far. Thanks for this awesome piece of software. One thing I noticed though, was that the order reference always keeps increasing, even after creating a new cerebro instance.

Concretely, I have a function that calculates a portfolio performance, given some input assets. This function is called in a loop. Every function call should create a new cerebro instance, yet the order reference always keeps increasing. Is this expected behavior and why?

The program looks like the following:

def calculate_performance(assets, start, end):

    cerebro = bt.Cerebro()

    ...

    results = cerebro.run()
    return cerebro.broker.getvalue()

if __name__ == "__main__":

    for assets in asset_list:

        ending_value = calculate_performance(assets, start, end)

Thanks a lot in advance!

[backtrader]

@nimrare said in order.ref keeps increasing after new cerebro instantiation:

why?

Because you are in a single Python script.