Python计算程序运行时间的方法

def start_sleep():
    time.sleep(3)

if __name__ == '__main__':
    #The start time
    start = time.clock()

    #A program which will run for 3 seconds
    start_sleep()

    #The End time
    end = time.clock()

    print("The function run time is : %.03f seconds" %(end-start))

    # End