Fixed build errors

Author: lucafs

packages/python/plotly/plotly/express/_core.py

@@ -2146,9 +2146,9 @@ def make_figure(args, constructor, trace_patch=None, layout_patch=None):
     layout_patch["legend"] = dict(tracegroupgap=0)
     if trace_name_labels:
         layout_patch["legend"]["title_text"] = ", ".join(trace_name_labels)
-    elif('showlegend' in trace_patch.keys()):
-        if(trace_patch['showlegend'] and constructor == go.Pie):
-            layout_patch["legend"]["title_text"] = args['names']
+    elif "showlegend" in trace_patch.keys():
+        if trace_patch["showlegend"] and constructor == go.Pie:
+            layout_patch["legend"]["title_text"] = args["names"]
     if args["title"]:
         layout_patch["title_text"] = args["title"]
     elif args["template"].layout.margin.t is None: