fix get_anion_types

pymatgen/io/lobster/lobsterenv.py

@@ -227,16 +227,8 @@ def anion_types(self):
 
         return set(anion_species)
 
+    @deprecated(replacement=self.anion_types, message="use anion_types instead")
     def get_anion_types(self):
-        """
-        Return the types of anions present in crystal structure as a set
-        Returns: set of Element describing anions in the crystal structure
-        """
-        from warnings import warn
-
-        @deprecated(replacement=self.anion_types, message="use anion_types instead")
-        def get_anion_types(self):
-
         return self.anion_types
 
     def get_nn_info(self, structure: Structure, n, use_weights=False):

pymatgen/io/lobster/tests/test_lobsterenv.py

@@ -519,6 +519,7 @@ def test_structure_graph(self):
         )
         assert isinstance(sg, StructureGraph)
 
+
     def test_extended_structure_graph(self):
         self.chemenvlobsterNaCl = LobsterNeighbors(
             are_coops=False,