python实现简单的计时器功能函数
2018-10-15 17:35
阅读：473
本文实例讲述了python实现简单的计时器功能函数。分享给大家供大家参考。具体如下：
此函数通过python实现了一个简单的计时器动能：
Simple Timing Function. This function prints out a message with the elapsed time from the previous call. It works with most Python 2.x platforms. The function uses a simple trick to store a persistent variable (clock) without using a global variable. import time def dur( op=None, clock=[time.time()] ): if op != None: duration = time.time() - clock[0] print %s finished. Duration %.6f seconds. % (op, duration) clock[0] = time.time() # Example if __name__ == __main__: import array dur() # Initialise the timing clock opt1 = array.array(H) for i in range(1000): for n in range(1000): opt1.append(n) dur(Array from append) opt2 = array.array(H) seq = range(1000) for i in range(1000): opt2.extend(seq) dur(Array from list extend) opt3 = array.array(H) seq = array.array(H, range(1000)) for i in range(1000): opt3.extend(seq) dur(Array from array extend) # Output: # Array from append finished. Duration 0.175320 seconds. # Array from list extend finished. Duration 0.068974 seconds. # Array from array extend finished. Duration 0.001394 seconds.希望本文所述对大家的Python程序设计有所帮助。
评论
亲，登录后才可以留言！