diff --git a/cirq/ops/linear_combinations.py b/cirq/ops/linear_combinations.py index ed223dfe0de..e0f4e80b7ee 100644 --- a/cirq/ops/linear_combinations.py +++ b/cirq/ops/linear_combinations.py @@ -870,7 +870,7 @@ def _projector_string_from_projector_dict(projector_dict, coefficient=1.0): return ProjectorString(dict(projector_dict), coefficient) -@value.value_equality(approximate=True) +@value.value_equality(approximate=True, unhashable=True) class ProjectorSum: """List of mappings representing a sum of projector operators.""" diff --git a/cirq/protocols/hash_from_pickle_test.py b/cirq/protocols/hash_from_pickle_test.py index 3805e92ca87..92990693ad0 100644 --- a/cirq/protocols/hash_from_pickle_test.py +++ b/cirq/protocols/hash_from_pickle_test.py @@ -46,8 +46,6 @@ "cirq/protocols/json_test_data/sympy.pi.json", # RigettiQCSAspenDevice does not pickle "cirq_rigetti/json_test_data/RigettiQCSAspenDevice.json", - # TODO(#6674,pavoljuhas) - fix pickling of ProjectorSum - "cirq/protocols/json_test_data/ProjectorSum.json", )