plotly
diff --git a/‎plotly/graph_objs/graph_objs.py
Copy file name to clipboardExpand all lines: plotly/graph_objs/graph_objs.py
+1-1Lines changed: 1 addition & 1 deletion b/‎plotly/graph_objs/graph_objs.py
Copy file name to clipboardExpand all lines: plotly/graph_objs/graph_objs.py
+1-1Lines changed: 1 addition & 1 deletion
@@ -700,7 +700,7 @@ def to_string(self, level=0, indent=4, eol='\n',
                 eol=eol,
                 indent=' ' * indent * (level+1),
                 key=key)
-            if isinstance(key, PlotlyBase):
+            if isinstance(self[key], PlotlyBase):
                 string += self[key].to_string(level=level+1,
                                               indent=indent,
                                               eol=eol,