fix mypy err

Author: BobTheBuidler

mypyc/primitives/dict_ops.py

@@ -19,6 +19,7 @@
     ERR_NEG_INT,
     binary_op,
     custom_op,
+    custom_primitive_op,
     function_op,
     load_address_op,
     method_op,
@@ -80,20 +81,21 @@
     error_kind=ERR_NEVER,
 )
 
-# dict[key]
-exact_dict_get_item_op = custom_op(
+# dict[key] = value
+dict_get_item_op = method_op(
+    name="__getitem__",
     arg_types=[dict_rprimitive, object_rprimitive],
     return_type=object_rprimitive,
-    c_function_name="CPyDict_GetItemUnsafe",
+    c_function_name="CPyDict_GetItem",
     error_kind=ERR_MAGIC,
 )
 
-# dictsubclass[key]
-dict_get_item_op = method_op(
-    name="__getitem__",
+# dict[key] = value (exact dict only, no subclasses)
+# NOTE: this is currently for internal use only, and not used for CallExpr specialization
+exact_dict_get_item_op = custom_primitive_op(
     arg_types=[dict_rprimitive, object_rprimitive],
     return_type=object_rprimitive,
-    c_function_name="CPyDict_GetItem",
+    c_function_name="CPyDict_GetItemUnsafe",
     error_kind=ERR_MAGIC,
 )