Clean up index name if not multiindex

MarcoGorelli · datapythonista · web-flow · commit cd951310f290 · 2019-08-20T15:31:03.000+01:00
Co-Authored-By: Marc Garcia &lt;garcia.marc@gmail.com&gt;
diff --git a/pandas/core/frame.py b/pandas/core/frame.py
@@ -6243,7 +6243,7 @@ def explode(self, column: Union[str, Tuple]) -> "DataFrame":
                 for num, val in enumerate(self.index.names)
             ]
         else:
-            index_names = [i if i else "index" for i in [self.index.name]]
+            index_names = [self.index.name or "index"]
 
         column_with_index = self[column].reset_index()
 

Original file line number	Diff line number	Diff line change
`@@ -6243,7 +6243,7 @@ def explode(self, column: Union[str, Tuple]) -> "DataFrame":`
`6243`	`6243`	`for num, val in enumerate(self.index.names)`
`6244`	`6244`	`]`
`6245`	`6245`	`else:`
`6246`		`- index_names = [i if i else "index" for i in [self.index.name]]`
	`6246`	`+ index_names = [self.index.name or "index"]`
`6247`	`6247`
`6248`	`6248`	`column_with_index = self[column].reset_index()`
`6249`	`6249`