Remove extra index column on Gremlin results table (#343)

* Remove extra index column on Gremlin results table

* Update Changelog

Co-authored-by: Michael Chin <[email protected]>

Author: michaelnchin

ChangeLog.md

@@ -13,6 +13,7 @@ Starting with v1.31.6, this file will contain a record of major features and upd
 - Fixed %sparql_status magic to return query status without query ID ([Link to PR](https://github.com/aws/graph-notebook/pull/337))
 - Fixed incorrect Gremlin query --store-to output ([Link to PR](https://github.com/aws/graph-notebook/pull/334))
 - Fixed certain characters not displaying correctly in results table ([Link to PR](https://github.com/aws/graph-notebook/pull/341))
+- Fixed extra index column displaying in Gremlin results table on older Pandas versions ([Link to PR](https://github.com/aws/graph-notebook/pull/343))
 - Reverted Gremlin console tab to single results column ([Link to PR](https://github.com/aws/graph-notebook/pull/330))
 - Bumped jquery-ui from 1.13.1 to 1.13.2 (([Link to PR](https://github.com/aws/graph-notebook/pull/328))
 

src/graph_notebook/magics/graph_magic.py

@@ -765,6 +765,9 @@ def gremlin(self, line, cell, local_ns: dict = None):
                 results_df.insert(0, "#", range(1, len(results_df) + 1))
                 if len(results_df.columns) == 2 and int(results_df.columns[1]) == 0:
                     results_df.rename({results_df.columns[1]: 'Result'}, axis='columns', inplace=True)
+                results_df.set_index('#', inplace=True)
+                results_df.columns.name = results_df.index.name
+                results_df.index.name = None
 
         if not args.silent:
             metadata_output = widgets.Output(layout=gremlin_layout)