Fix HuggingFaceFeature / CustomEvals hash error. (#1248)

* Fix HuggingFaceFeature hash error.
* Fix CustomEvals hash error.

src/evidently/features/hf_feature.py

@@ -35,6 +35,9 @@ def generate_data(self, data: pd.DataFrame, data_definition: DataDefinition) ->
         result = func(data[self.column_name], **{param: self.params.get(param, None) for param in available_params})
         return result
 
+    def __hash__(self):
+        return DataFeature.__hash__(self)
+
 
 class HuggingFaceToxicityFeature(DataFeature):
     __feature_type__: ClassVar = ColumnType.Numerical

src/evidently/pydantic_utils.py

@@ -8,6 +8,7 @@
 from functools import lru_cache
 from typing import TYPE_CHECKING
 from typing import Any
+from typing import Callable
 from typing import ClassVar
 from typing import Dict
 from typing import FrozenSet
@@ -223,6 +224,8 @@ def get_value_fingerprint(value: Any) -> FingerprintPart:
         return tuple(get_value_fingerprint(v) for v in value)
     if isinstance(value, (set, frozenset)):
         return tuple(get_value_fingerprint(v) for v in sorted(value, key=str))
+    if isinstance(value, Callable):  # type: ignore
+        return hash(value)
     raise NotImplementedError(
         f"Not implemented for value of type {value.__class__.__module__}.{value.__class__.__name__}"
     )