Modified gantt datasource validation error message

plotly · Sep 3, 2016 · 7681352 · 7681352
1 parent 1a1d762
commit 7681352
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/plotly/tools.py b/plotly/tools.py
@@ -1693,7 +1693,7 @@ def _validate_gantt(df):
                 if key not in df:
                     raise exceptions.PlotlyError(
                         "The columns in your dataframe must include the "
-                        "keys".format(REQUIRED_GANTT_KEYS)
+                        "following keys: {0}".format(', '.join(REQUIRED_GANTT_KEYS))
                     )
 
             num_of_rows = len(df.index)