python实现简单的计时器功能函数
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：
'''SimpleTimingFunction.
Thisfunctionprintsoutamessagewiththeelapsedtimefromthe
previouscall.ItworkswithmostPython2.xplatforms.Thefunction
usesasimpletricktostoreapersistentvariable(clock)without
usingaglobalvariable.
'''
importtime
defdur(op=None,clock=[time.time()]):
ifop!=None:
duration=time.time()-clock[0]
print'%sfinished.Duration%.6fseconds.'%(op,duration)
clock[0]=time.time()
#Example
if__name__=='__main__':
importarray
dur()#Initialisethetimingclock
opt1=array.array('H')
foriinrange(1000):
forninrange(1000):
opt1.append(n)
dur('Arrayfromappend')
opt2=array.array('H')
seq=range(1000)
foriinrange(1000):
opt2.extend(seq)
dur('Arrayfromlistextend')
opt3=array.array('H')
seq=array.array('H',range(1000))
foriinrange(1000):
opt3.extend(seq)
dur('Arrayfromarrayextend')
#Output:
#Arrayfromappendfinished.Duration0.175320seconds.
#Arrayfromlistextendfinished.Duration0.068974seconds.
#Arrayfromarrayextendfinished.Duration0.001394seconds.
希望本文所述对大家的Python程序设计有所帮助。
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