[Mod] clear previously loaded history data

2019-06-10 13:29:03 +08:00 · 2019-06-10 13:29:03 +08:00 · 8f5f187fcd
commit 8f5f187fcd
parent 4fadcd9016
1 changed files with 2 additions and 0 deletions
--- a/vnpy/app/cta_strategy/backtesting.py
+++ b/vnpy/app/cta_strategy/backtesting.py
@ -214,6 +214,8 @@ class BacktestingEngine:
        if not self.end:
            self.end = datetime.now()

+        self.history_data.clear()       # Clear previously loaded history data
+
        # Load 30 days of data each time and allow for progress update
        progress_delta = timedelta(days=30)
        total_delta = self.end - self.start