GraphSet objects (and its internal setset objects) should not be used as a hash key since they are mutable, but they can be a hash key in the current implementation.
FrozenGraphSet objects will be introduced to be a hash key, in accordance with Python policy.
GraphSet objects (and its internal setset objects) should not be used as a hash key since they are mutable, but they can be a hash key in the current implementation. FrozenGraphSet objects will be introduced to be a hash key, in accordance with Python policy.