I can also recommend that you check out oilscenter online store, the site offers a wide choice of high-quality cosmetics, for example, you can get Basil or [url=https://oilscenter.com/camphor-essential-oil]Camphor Essential Oil[/url].

After alot of time I made a version 2.0.0 of this with some new features (e.g. live plotting) and many bug fixes. In case someone is interested, it is available on PyPi.

@alexgorbachev at last ,it prove it is works,but there some thing to say,if your extend num>=2,
the extend in bstart and bupdate must be define and inplement by strict sort,it seem the backtrader recoginze them by order and not name

i have a try but it works not what i wanted,the extra cannot be update auto

so in next you would do something like:

in init you would do:

You should read reviews about them first. [url=https://rocketech.it/cases]case studies[/url] are self-contained stories about how developers solved client's problems and created an app for them. Don't trust the developers you've hired to do the job without supervision.

I am using ccxtbt from: https://github.com/Dave-Vallance/bt-ccxt-store

Where do you specify the frequency of fetching the data?

@run-out
Thanks! Is there anything I should avoid while using IB?

@sarah_james You can use order_target_percent(data, target=0.05) to buy 5% of your current portfolio value. Then when you want to sell, you can use order_target_percent(data, target=0.0)