利用python多线程实现拷贝文件夹的文件

import multiprocessing

import threading

import os

import time

import random

import sys

def copy_file(queue,file_name,source_folder_name,dest_folder_name):

#print(‘正在复制：%s‘ % file_name)

if os.path.isdir(source_folder_name + ‘/‘ + file_name):

queue.put(file_name)

return

if not os.path.exists(dest_folder_name):

os.mkdir(dest_folder_name)

data_file = open(source_folder_name + ‘/‘ + file_name,‘rb‘)

cp_file = open(dest_folder_name + ‘/‘ + file_name,‘wb‘)

while True:

content = data_file.read(4096)

if len(content) == 0:

break

cp_file.write(content)

data_file.close()

cp_file.close()

#print(‘%s文件复制完成！‘ % file_name)

queue.put(file_name)

def main():

source_folder_name = input("请输入文件夹:")

dest_folder_name = source_folder_name +"附件"

file_names = os.listdir(source_folder_name)

#创建一个队里

queue = multiprocessing.Manager().Queue(128)

#创建进程池

p = multiprocessing.Pool(1)

for file_name in file_names:

#print(‘put file_name %s‘ % file_name)

p.apply_async(copy_file,args=(queue,file_name,source_folder_name,dest_folder_name))

p.close()

#p.join()

all_file_nums = len(file_names)

while True:

file_name = queue.get()

if file_name in file_names:

file_names.remove(file_name)

copy_rate = (all_file_nums - len(file_names)) *100 /all_file_nums

print("\r%.2f=========>(%s) (%0.2f/%0.2f)" % (copy_rate, file_name,len(file_names),all_file_nums) + " " * 50,end="")

#\r 默认表示将输出的内容返回到第一个指针，这样的话，后面的内容会覆盖前面的内容

#sys.stdout.flush()

#if len(file_names) < 5:

#    print("remaining: %s" % file_names)

if copy_rate >= 100:

break

print(‘拷贝文件完成!‘)

if __name__ == "__main__":

main()