homework_download.py

# 以文件主题(Subject)在制定路径下创建文件夹，在该文件夹下下载该邮件的附件
#!/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 = "*********@qq.com"
password = "*************"#notice: here is not the password of your email, but the codes you got when u set the pop open
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(path + 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)
print(index)

for i in range(index,0,-1):
    #倒序遍历邮件
    resp, lines, octets = server.retr(i)
    #print(resp)
    #print(octets)
    # 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
    msgHeader= msg["Subject"]
    # 对头文件进行解码
    msgHeader = decode_str(msgHeader)
    print(msgHeader) 
    path='/Users/../hmorganizer/'+ msgHeader #制定路径下
    #如果没有文件夹就新建一个，如果有的话就直接走下一步
    if not os.path.exists(path):
        os.mkdir(path)
    #取日期近的文件下载else:

    path='/Users/../hmorganizer/'+ msgHeader+'/'   #在该路径下下载附件
    f_list = get_att(msg)#获取附件
    
        
    
    #print_info(msg)