通过OS和FILE类复制文件

import os
import time
filei=os.open("d://mkbird.wav",os.O_RDONLY|os.O_BINARY)
fileo=os.open("d://mkbirdcp.wav",os.O_WRONLY|os.O_BINARY|os.O_CREAT)

start=time.time()
while 1:
    data=os.read(filei,4096)
    if not data:
        break;
    os.write(fileo,data)
   
dur=time.time()-start
print dur

 

 

import time

filei=open("d://mkbird.wav","rb")
fileo=open("d://mkbirdcp.wav","wb")

start=time.time()
while 1:
    data=filei.read(1024)
    if not data:
        break
    fileo.write(data)
       
dur=time.time()-start
print dur

 

发现还是使用底层的OS类更快一些。MKDIRD文件大小事40多MB!