Add asdict method and test

Author: TedBrookings

fgpyo/util/metric.py

@@ -149,6 +149,15 @@ def values(self) -> Iterator[Any]:
         for field in inspect.get_fields(self.__class__):  # type: ignore[arg-type]
             yield getattr(self, field.name)
 
+    def asdict(self) -> Dict[str, Any]:
+        """
+        A dictionary mapping attribute names to values, inserted in the same order as the header.
+        """
+        return {
+            field.name: getattr(self, field.name)
+            for field in inspect.get_fields(self.__class__)  # type: ignore[arg-type]
+        }
+
     def formatted_values(self) -> List[str]:
         """An iterator over formatted attribute values in the same order as the header."""
         return [self.format_value(value) for value in self.values()]

fgpyo/util/tests/test_metric.py

@@ -391,6 +391,11 @@ def test_metric_values(data_and_classes: DataBuilder) -> None:
     assert list(data_and_classes.Person(name="name", age=42).values()) == ["name", 42]
 
 
+@pytest.mark.parametrize("data_and_classes", (attr_data_and_classes, dataclasses_data_and_classes))
+def test_metric_asdict(data_and_classes: DataBuilder) -> None:
+    assert data_and_classes.Person(name="name", age=42).asdict() == {"name": "name", "age": 42}
+
+
 @pytest.mark.parametrize("data_and_classes", (attr_data_and_classes, dataclasses_data_and_classes))
 def test_metric_parse(data_and_classes: DataBuilder) -> None:
     Person: TypeAlias = data_and_classes.Person