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Update backtesting.py

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1122455801 2019-06-15 19:00:06 +08:00
parent 961f7366a3
commit ffebdd2ecd
1 changed files with 4 additions and 0 deletions
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vnpy/app/cta_strategy/backtesting.py
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@ -214,6 +214,10 @@ class BacktestingEngine:
if not self.end: if not self.end:
self.end = datetime.now() self.end = datetime.now()
if self.start >= self.end:
self.output("起始日期必须小于结束日期")
return
self.history_data.clear() # Clear previously loaded history data self.history_data.clear() # Clear previously loaded history data
# Load 30 days of data each time and allow for progress update # Load 30 days of data each time and allow for progress update