今日Python的玄学问题import timestart=time.time()for i in range(1000): c=[] for m in range(1000): c.append(i*100+m*1000)end=time.time()#time1=end-start这行代码较于臃肿了可以省略print("time1的运行时间为{0}".format((end-start)))start1=time.time()for i in range(1000): d=[] f=i*100 for m in range(1000): d.append(f+m*1000)end1=time.time()print("time2的运行时间为{0}".format((end1-start1)))为什么两个format后面写两层括号或者三层括号会导致第二层函数的运行时间从2.6飙升到5.0