Exception in lineseries
rastegarr last edited by backtrader
ValueError: __len__() should return >= 0
it breaks here:
def __len__(self): Proxy line operation ''' return len(self.lines)
I have not modified any files or modules except the ibtest.py. The modification of ibtest.py is straightforward and I am able to get live data for even 20 symbols with no problem. The exception happens when I am working with higher number of symbols. I can provide the code if you're interested.
I run the program with these arguments:
--port 4001 --no-backfill_start --resample --timeframe Minutes --compression 1 --clientId 1111
and I connect to IB Gateway in Windows and program is running in Debug Mode python 3.
A full exception trace would be a lot more useful than the selected final line, which only says that something hasn't got a length.
The full trace will give hints as to where the error was triggered and not where the error finally happened.