3 Black Crows / 3 White Soldiers
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Sharing a simple candle indicator. These two patterns (coupled with other price movements), can be good indicators for price reversal:
- 3 White Soldiers
- 3 Black Crows
This is an adaptation from an earlier post by @backtrader.
3 Black Crows Example:
import backtrader as bt class BlackCrows(bt.Indicator): lines = ('crows',) params = ( ('period', 3), # how many to consider ('ago', 0), # offset to start in the past ) def __init__(self): incs = [self.data.close(-i) < self.data.open(-i) for i in range(self.p.ago, self.p.ago + self.p.period)] self.lines.crows = bt.All(*incs)
Use in strategy below. I often use 5 consecutive candles when there has been a fast move that is reversing.
class TheStrategy(bt.Strategy): def __init__(self): self.three_crows = BlackCrows(self.data) # 3 black crows. Default period = 3 self.five_crows = BlackCrows(self.data, period=5) # 5 black crows. Overrides period = 5
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Maybe dont need to reinvent the wheel? Using
bt.talib.CDL3WHITESOLDIERS
andbt.talib.CDL3BLACKCROWS
should work. -
@barton05 said in 3 Black Crows / 3 White Soldiers:
bt.talib
Must be a new addition since the backtrader website was developed. It isn't listed on the BT website.
https://www.backtrader.com/docu/talibindautoref/
Quite a few other great indicators in the ta-lib library too:
https://github.com/mrjbq7/ta-lib
Thanks for pointing this out.