[Mod] flake8 code improve

docs/conf.py

@@ -188,7 +188,7 @@ texinfo_documents = [
 
 # -- Options for intersphinx output ----------------------------------------------
 intersphinx_mapping = {
-    #'python': ('https://docs.python.org/3/', None),
+    # 'python': ('https://docs.python.org/3/', None),
 }
 
 # -- Options for Epub output -------------------------------------------------

vnpy/app/cta_backtester/ui/widget.py

@@ -938,4 +938,3 @@ class BacktestingResultDialog(QtWidgets.QDialog):
     def is_updated(self):
         """"""
         return self.updated
-

vnpy/app/cta_strategy/backtesting.py

@@ -1039,6 +1039,7 @@ class BacktestingEngine:
         """
         return list(self.daily_results.values())
 
+
 class DailyResult:
     """"""