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  1.9.75.123: Adding extra day before dtcmp calc, as otherwise the extradays have no effect (#388) Fixing the issue with TWS API Bust events (err code 10225) (#396) Add support for ASK quotes for CASH assets (#395) plus fixes Remove duplicated note (#386) Fixing time.clock for python>=3.8 (#394) Changed file initiation for WriterFile to make it work under multi-process optimization (#397) plus fixes Fixed backend loading if a backend is loaded (Google Collab) and backend to use on MacOSX Fix: crumb in feeds.YahooFinanceData (#400) Fix color assignments, ticks line widths and some pep-8 improvements Fix timeframe/compression detection when plotting Fix default value for ticks display format on X-axis Sample with ta-lib SAR test Generic support of multiple "text/*" content types for Yahoo
• Blog

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  @benjomeyer said in Timers: timername='selltimer', Given how you pass it ... you could probably try this better def notify_timer(self, timer, when, timername): if timername=='buytimer': self.buy_stocks() elif timername=='selltimer': self.sell_stocks() given that you have no additional *args or **kwargs. But a more general approach I would suggest this def notify_timer(self, timer, when, **kwargs): timername = kwargs.get('timername', None) if timername=='buytimer': self.buy_stocks() elif timername=='selltimer': self.sell_stocks() where you can also decide if a default logic for None is needed. Note: notice the usage of elif
• General Discussion

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  so you could use intraday data and replay it to 1day timeframe
• Indicators/Strategies/Analyzers
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  @backtrader said in Setting a Stop loss and target in a strategy (missing piece in a sample): Such a sample already exists. It is ATR-Based See: https://www.backtrader.com/blog/posts/2016-07-30-macd-settings/macd-settings.html (Of course, it is included in the sources) Interesting. So if I understand correctly, in the example above, it's basically an ATR trailing stop, but it just uses a self.close() so it's kind of like an invisible stop loss, instead of updating a real stop loss by cancelling the old stop order and submitting a new stop order? Both ways will work? I wonder which is recommended?
• General Code/Help
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  Not using it myself(have my own utility). It seems you just need to supply a ticket name (or filensme containing tickets names on each line) on command line. It will connect to the local iqfeed client by itself, download the history data and store it to the influxdb database. I suggest you just learn the source code and see if you can use some ideas from it in you own system.
• bta-lib
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  I tried with btalib to compare with original TA-Lib class BTALIBBeginningStrategy(bt.Strategy): params = ( ('MA', 100), ) def __init__(self): #self.ma = bt.indicators.MovingAverageSimple(period=self.params.MA) self.ma = btalib.sma(self.data.close, period=self.p.MA) but I got this error File "/home/learner/venv/lib/python3.8/site-packages/btalib/indicator.py", line 152, in __call__ b_init(self, *args, **kwargs) File "/home/learner/venv/lib/python3.8/site-packages/btalib/indicators/sma.py", line 28, in __init__ self.o.sma = self.i0.rolling(window=self.p.period).mean() File "/home/learner/venv/lib/python3.8/site-packages/btalib/meta/lines.py", line 394, in real_multifunc_op return _MultiFunc_Op(self, *args, **kwargs) File "/home/learner/venv/lib/python3.8/site-packages/btalib/meta/lines.py", line 306, in __init__ trailer = series[self._minidx:] File "/home/learner/venv/lib/python3.8/site-packages/backtrader/linebuffer.py", line 163, in __getitem__ return self.array[self.idx + ago] TypeError: unsupported operand type(s) for +: 'int' and 'slice' The code with original TA-Lib runs normally. But I don't understand what the error with btalib. Please explain for new rookies! Thank you!