Cope with Namespace annotations in Python 3.14

The __annotations__ member can be incomplete, use the get_annotations() helper from annotationlib (Python >= 3.14) or inspect (Python >= 3.10) if available. Related: #3083 Signed-off-by: Nils Philippsen <nils@tiptoe.de>

Author: nphilipp

rdflib/namespace/__init__.py

@@ -74,6 +74,18 @@
 
 import logging
 import warnings
+
+try:
+ # Python >= 3.14
+ from annotationlib import get_annotations
+except ImportError: # pragma: no cover
+ try:
+ # Python >= 3.10
+ from inspect import get_annotations
+ except ImportError:
+ def get_annotations(thing: Any) -> dict:
+ return thing.__annotations__
+
 from functools import lru_cache
 from pathlib import Path
 from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Optional, Set, Tuple, Union
@@ -310,15 +322,15 @@ def __contains__(cls, item: str) -> bool:
  if item_str.startswith(str(this_ns)):
  item_str = item_str[len(str(this_ns)) :]
  return any(
- item_str in c.__annotations__
+ item_str in get_annotations(c)
  or item_str in c._extras
  or (cls._underscore_num and item_str[0] == "_" and item_str[1:].isdigit())
  for c in cls.mro()
  if issubclass(c, DefinedNamespace)
  )
 
  def __dir__(cls) -> Iterable[str]:
- attrs = {str(x) for x in cls.__annotations__}
+ attrs = {str(x) for x in get_annotations(cls)}
  # Removing these as they should not be considered part of the namespace.
  attrs.difference_update(_DFNS_RESERVED_ATTRS)
  values = {cls[str(x)] for x in attrs}
@@ -327,7 +339,7 @@ def __dir__(cls) -> Iterable[str]:
  def as_jsonld_context(self, pfx: str) -> dict: # noqa: N804
  """Returns this DefinedNamespace as a JSON-LD 'context' object"""
  terms = {pfx: str(self._NS)}
- for key, term in self.__annotations__.items():
+ for key, term in get_annotations(self).items():
  if issubclass(term, URIRef):
  terms[key] = f"{pfx}:{key}"