fix(pandas): ensure that empty arrays unnest to nothing

ibis-project · Nov 29, 2023 · fa9831f · fa9831f
1 parent 28c2498
commit fa9831f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/ibis/backends/pandas/execution/arrays.py b/ibis/backends/pandas/execution/arrays.py
@@ -147,7 +147,7 @@ def execute_array_collect_groupby(op, data, where, aggcontext=None, **kwargs):
 
 @execute_node.register(ops.Unnest, pd.Series)
 def execute_unnest(op, data, **kwargs):
-    return data.explode()
+    return data[data.map(lambda v: bool(len(v)), na_action="ignore")].explode()
 
 
 @execute_node.register(ops.ArrayFlatten, pd.Series)