Implement __hash__ and __eq__ methods in IdentifiedNode

Author: ticapix

rdflib/term.py

@@ -269,6 +269,14 @@ class IdentifiedNode(Identifier):
 
     __slots__ = ()
 
+    def __hash__(self) -> int:
+        return super().__hash__()
+
+    def __eq__(self, other: Any) -> bool:
+        if isinstance(other, IdentifiedNode):
+            return self.n3() == other.n3() # compare the N3 notation and not the string representation
+        return super().__eq__(other)
+        
     def n3(self, namespace_manager: NamespaceManager | None = None) -> str:
         raise NotImplementedError()