Support Python 3.14 __annotate_func__

Author: miguelgrinberg

elasticsearch/dsl/document_base.py

@@ -332,6 +332,21 @@ def __init__(self, name: str, bases: Tuple[type, ...], attrs: Dict[str, Any]):
         #     # ignore attributes
         #     field10: ClassVar[string] = "a regular class variable"
         annotations = attrs.get("__annotations__", {})
+        if not annotations:
+            # Python 3.14+ uses annotationlib
+            try:
+                import annotationlib
+
+                annotate = annotationlib.get_annotate_from_class_namespace(attrs)
+                if annotate:
+                    annotations = (
+                        annotationlib.call_annotate_function(
+                            annotate, format=annotationlib.Format.VALUE
+                        )
+                        or {}
+                    )
+            except ImportError:
+                pass
         fields = {n for n in attrs if isinstance(attrs[n], Field)}
         fields.update(annotations.keys())
         field_defaults = {}