def constants(self):
        return self.visit(lambda e: e.constants(),
                          lambda parts: reduce(operator.or_, parts, set()))
Return data in JIT JSON format.
dataset/ETHPy150Open nltk/nltk/nltk/sem/logic.py/Expression.constants--crossover with--dataset/ETHPy150Open networkx/networkx/networkx/readwrite/json_graph/jit.py/jit_data