feat(rust, python): support cast to list (#10623)

Cargo.toml

@@ -54,7 +54,7 @@ xxhash-rust = { version = "0.8.6", features = ["xxh3"] }
 [workspace.dependencies.arrow]
 package = "arrow2"
 git = "https://github.com/jorgecarleitao/arrow2"
-rev = "2b3e2a9e83725a557d78b90cd39298c5bef0ca4a"
+rev = "ba6a882bc1542b0b899774b696ebea77482b5c31"
 # branch = ""
 # version = "0.17.4"
 default-features = false

py-polars/tests/unit/datatypes/test_list.py

@@ -5,6 +5,7 @@
 import pandas as pd
 
 import polars as pl
+from polars.testing import assert_series_equal
 
 
 def test_dtype() -> None:
@@ -439,6 +440,15 @@ def test_list_recursive_categorical_cast() -> None:
     assert s.to_list() == values
 
 
+def test_non_nested_cast_to_list() -> None:
+    df = pl.DataFrame({"a": [1, 2, 3]})
+
+    df = df.with_columns([pl.col("a").cast(pl.List(pl.Int64))])
+
+    expected = pl.Series("a", [[1], [2], [3]])
+    assert_series_equal(df.to_series(), expected)
+
+
 def test_list_new_from_index_logical() -> None:
     s = (
         pl.select(pl.struct(pl.Series("a", [date(2001, 1, 1)])).implode())