from multiprocessing import Pool,Manager
import os,time
def copyFileTask(fileName,oldFolderName,newFolderName,queue):
fr = open(oldFolderName+"/"+fileName,'r',encoding='UTF-8')
fw = open(newFolderName+"/"+fileName,'w',encoding='UTF-8')
#复制
while True:
content = fr.read(1024)
if len(content) == 0:
break
fw.write(content)
#关闭文件
fr.close()
fw.close()
queue.put(fileName)
def main():
oldFolderName = 'test'#input("请输入要复制的文件夹名字：")
#创建目录
newFolderName = oldFolderName+"[复件]"
os.mkdir(newFolderName)
#获取文件列表
fileList = os.listdir(oldFolderName)
#使用多进程的方式复制
pool = Pool(5)
#消息队列
queue = Manager().Queue()
for file in fileList:
#copyFileTask(file,oldFolderName,newFolderName,queue)
pool.apply_async(copyFileTask,args=(file,oldFolderName,newFolderName,queue))
num = 0
total = len(fileList)
while num<total:
queue.get()
num += 1
rate = num/total*100
print('\r复制的进度是:%.2f%%'%rate,end="")
#关闭进程池，不再接受新的进程
#pool.close()
#主进程阻塞等待子进程的退出
#pool.join()
if __name__ == '__main__':
t_start = time.time()
main()
t_stop = time.time()
print("\n执行完毕,耗时%0.2f"%(t_stop-t_start))
单进程：
C:\Users\Administrator>python d:\python\copy.py
复制的进度是:100.00%
执行完毕,耗时6.53
多进程：
C:\Users\Administrator>python d:\python\copy.py
复制的进度是:100.00%
执行完毕,耗时6.59
原文地址：http://blog.51cto.com/fonyer/2059256