问调用并行模块时Python计时代码不正确-我的代码还是模块？

EN

class GenX:

    def log_results(self, solver):

            time2 = time.clock()
            print '%0.3f' % time2 - self.time1
            ^
            ##### this value is incorrect ###########

    def __init__(self):
        self.time1 = time.clock()

        mySimulation.setup()
        mySimulation.OnceCompleteCall(log_results)

        ## (in reality both setup and start are more complicated)

    def optimize(self):
        mySimulation.start()
        return