修复未来函数bug
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@@ -54,7 +54,7 @@ class Strategy(ABC):
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pass # 默认不执行任何操作,具体策略可覆盖
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@abstractmethod
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def on_open_bar(self, bar: "Bar"):
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def on_open_bar(self, open: float, symbol: str):
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"""
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每当新的K线数据到来时调用此方法。
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Args:
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