Update backtesting.py

2019-06-15 19:00:06 +08:00 · 2019-06-15 19:00:06 +08:00 · ffebdd2ecd
commit ffebdd2ecd
parent 961f7366a3
1 changed files with 4 additions and 0 deletions
--- a/vnpy/app/cta_strategy/backtesting.py
+++ b/vnpy/app/cta_strategy/backtesting.py
@ -214,6 +214,10 @@ class BacktestingEngine:
        if not self.end:
            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

        # Load 30 days of data each time and allow for progress update