spiff-arena/SpiffWorkflow/doc/core/custom-tasks/strike.py

from SpiffWorkflow.specs.Simple import Simple

class NuclearStrike(Simple):
    def _on_complete_hook(self, my_task):
        print((self.my_variable, "sent!"))

    def serialize(self, serializer):
        return serializer.serialize_nuclear_strike(self)

    @classmethod
    def deserialize(self, serializer, wf_spec, s_state):
        return serializer.deserialize_nuclear_strike(wf_spec, s_state)