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I just started learning programming in python for trading with backtrader , now I'm doing some connection tests with IB Gateway- Backtrader with IbPY API. I can't understand why sometimes it works but most of the time the program seems that it can't download historical data to go and use live data. This is the simple test program:. backtrader is a popular, flexible, and user-friendly Python library for local backtests with great documentation, developed since 2015 by Daniel Rodriguez. In addition to a large and active community of individual traders, there are several banks and trading houses that use backtrader to prototype and test new strategies before porting them to a production-ready platform using, for example, Java.
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