From ab3fc9ee2c46ed3ebb4c6e2cd338fb4feb51aa8b Mon Sep 17 00:00:00 2001
From: Phillip Cloud <417981+cpcloud@users.noreply.github.com>
Date: Wed, 30 Aug 2023 11:09:19 -0400
Subject: [PATCH] fix(pandas): compatibility with 2.1 groupby behavior

---
 ibis/backends/pandas/execution/generic.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ibis/backends/pandas/execution/generic.py b/ibis/backends/pandas/execution/generic.py
index 58a47198d6d7..0a64f60e0f51 100644
--- a/ibis/backends/pandas/execution/generic.py
+++ b/ibis/backends/pandas/execution/generic.py
@@ -588,7 +588,10 @@ def execute_aggregation_dataframe(
             )
             for key in op.by
         ]
-        source = data.groupby(grouping_keys, group_keys=False)
+        source = data.groupby(
+            grouping_keys[0] if len(grouping_keys) == 1 else grouping_keys,
+            group_keys=False,
+        )
     else:
         source = data