def run(self):
        if self.called:
            raise RuntimeError("Already called")
        self.called = True
returns an object using with semantics for timing a node evaluation.
dataset/ETHPy150Open twisted/twisted/twisted/test/test_twistd.py/DummyReactor.run--crossover with--dataset/ETHPy150Open manahl/mdf/mdf/context.py/MDFContext._profile