Add test

pandas-dev · Sep 19, 2023 · 88b4f01 · 88b4f01
1 parent 7f8aeb8
commit 88b4f01
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/pandas/tests/apply/test_series_apply.py b/pandas/tests/apply/test_series_apply.py
@@ -679,3 +679,11 @@ def test_apply_type():
     result = s.apply(type)
     expected = Series([int, str, type], index=["a", "b", "c"])
     tm.assert_series_equal(result, expected)
+
+
+def test_series_apply_unpack_nested_data():
+    # GH#55189
+    ser = Series([[1, 2, 3], [4, 5, 6, 7]])
+    result = ser.apply(lambda x: Series(x))
+    expected = DataFrame({0: [1.0, 4.0], 1: [2.0, 5.0], 2: [3.0, 6.0], 3: [np.nan, 7]})
+    tm.assert_frame_equal(result, expected)