done

lib/python3.11/site-packages/narwhals/series_struct.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from typing import Generic
+
+from narwhals.typing import SeriesT
+
+
+class SeriesStructNamespace(Generic[SeriesT]):
+    def __init__(self, series: SeriesT) -> None:
+        self._narwhals_series = series
+
+    def field(self, name: str) -> SeriesT:
+        r"""Retrieve a Struct field as a new expression.
+
+        Arguments:
+            name: Name of the struct field to retrieve.
+
+        Examples:
+            >>> import polars as pl
+            >>> import narwhals as nw
+            >>> s_native = pl.Series(
+            ...     [{"id": "0", "name": "john"}, {"id": "1", "name": "jane"}]
+            ... )
+            >>> s = nw.from_native(s_native, series_only=True)
+            >>> s.struct.field("name").to_list()
+            ['john', 'jane']
+        """
+        return self._narwhals_series._with_compliant(
+            self._narwhals_series._compliant_series.struct.field(name)
+        )