REF: Fix mypy v0.920 issue

Ref: python/mypy#9430
kernc · Dec 18, 2021 · 94d20da · 94d20da
1 parent 0107d4a
commit 94d20da
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/backtesting/lib.py b/backtesting/lib.py
@@ -286,7 +286,7 @@ def func(x, *_, **__):
         series = series.s
 
     if agg is None:
-        agg = OHLCV_AGG.get(getattr(series, 'name', None), 'last')
+        agg = OHLCV_AGG.get(getattr(series, 'name', ''), 'last')
         if isinstance(series, pd.DataFrame):
             agg = {column: OHLCV_AGG.get(column, 'last')
                    for column in series.columns}