python+POP3实现批量下载邮件附件

#!/usr/bin/env python3 
# -*- coding: utf-8 -*- 
import poplib 
import email 
import datetime 
import time 
import os 
import xlrd 
import xlwt 
from email.parser import Parser 
from email.header import decode_header 
from email.utils import parseaddr 
 
 
 
# 输入邮件地址, 口令和POP3服务器地址: 
email = 'xxxxxxxx@qq.com' 
password = 'xxxxxxxxxxx' 
pop3_server = 'pop.qq.com' 
 
 
 
def decode_str(s):#字符编码转换 
  value, charset = decode_header(s)[0] 
  if charset: 
    value = value.decode(charset) 
  return value 
 
 
def get_att(msg): 
  import email 
  attachment_files = [] 
   
  for part in msg.walk(): 
    file_name = part.get_filename()#获取附件名称类型 
    contType = part.get_content_type() 
     
    if file_name:  
      h = email.header.Header(file_name) 
      dh = email.header.decode_header(h)#对附件名称进行解码 
      filename = dh[0][0] 
      if dh[0][1]: 
        filename = decode_str(str(filename,dh[0][1]))#将附件名称可读化 
        print(filename) 
        #filename = filename.encode("utf-8") 
      data = part.get_payload(decode=True)#下载附件 
      att_file = open('E:\\L\\zy\\307\\' + filename, 'wb')#在指定目录下创建文件，注意二进制文件需要用wb模式打开 
      attachment_files.append(filename) 
      att_file.write(data)#保存附件 
      att_file.close() 
  return attachment_files 
 
     
       
# 连接到POP3服务器,有些邮箱服务器需要ssl加密，对于不需要加密的服务器可以使用poplib.POP3() 
server = poplib.POP3_SSL(pop3_server) 
server.set_debuglevel(1) 
# 打印POP3服务器的欢迎文字: 
print(server.getwelcome().decode('utf-8')) 
# 身份认证: 
server.user(email) 
server.pass_(password) 
# 返回邮件数量和占用空间: 
print('Messages: %s. Size: %s' % server.stat()) 
# list()返回所有邮件的编号: 
resp, mails, octets = server.list() 
# 可以查看返回的列表类似[b'1 82923', b'2 2184', ...] 
print(mails) 
index = len(mails) 
 
 
 
for i in range(index,0,-1): 
  #倒序遍历邮件 
  resp, lines, octets = server.retr(i) 
  # lines存储了邮件的原始文本的每一行, 
  #邮件的原始文本: 
  msg_content = b'\r\n'.join(lines).decode('utf-8') 
  #解析邮件: 
  msg = Parser().parsestr(msg_content) 
  #获取邮件时间 
  date1 = time.strptime(msg.get("Date")[0:24],'%a, %d %b %Y %H:%M:%S') #格式化收件时间 
  date2 = time.strftime("%Y%m%d", date1)#邮件时间格式转换 
  if (date2<'20180306')|(date2>'20180314'): 
     
    continue 
  f_list = get_att(msg)#获取附件 
   
     
   
  #print_info(msg) 
 
server.quit()