python3收发email

使用廖雪峰的代码，暂时运行没问题，以此demo修改。

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from email import encoders
from email.header import Header
from email.mime.text import MIMEText
from email.utils import parseaddr, formataddr
import smtplib
#=============================下面是收邮件需要的头
from email.parser import Parser
from email.header import decode_header
import poplib


def _format_addr(s):
    name, addr = parseaddr(s)
    return formataddr((Header(name, 'utf-8').encode(), addr))
def send_mail():
    from_addr = input('From: ')
    password = input('Password: ')
    to_addr = input('To: ')
    smtp_server = input('SMTP server: ')

    msg = MIMEText('内容：今天申购情况。...', 'plain', 'utf-8')
    msg['From'] = _format_addr('Python自动消息 <%s>' % from_addr)
    msg['To'] = _format_addr('管理员 <%s>' % to_addr)
    msg['Subject'] = Header('验证码：123456', 'utf-8').encode()

    server = smtplib.SMTP(smtp_server, 25)
    server.set_debuglevel(1)
    server.login(from_addr, password)
    server.sendmail(from_addr, [to_addr], msg.as_string())
    server.quit()
    return 1


def guess_charset(msg):
    charset = msg.get_charset()
    if charset is None:
        content_type = msg.get('Content-Type', '').lower()
        pos = content_type.find('charset=')
        if pos >= 0:
            charset = content_type[pos + 8:].strip()
    return charset

def decode_str(s):
    value, charset = decode_header(s)[0]
    if charset:
        value = value.decode(charset)
    return value

def print_info(msg, indent=0):
    if indent == 0:
        for header in ['From', 'To', 'Subject']:
            value = msg.get(header, '')
            if value:
                if header=='Subject':
                    value = decode_str(value)
                else:
                    hdr, addr = parseaddr(value)
                    name = decode_str(hdr)
                    value = u'%s <%s>' % (name, addr)
            print('%s%s: %s' % ('  ' * indent, header, value))
    if (msg.is_multipart()):
        parts = msg.get_payload()
        for n, part in enumerate(parts):
            print('%spart %s' % ('  ' * indent, n))
            print('%s--------------------' % ('  ' * indent))
            print_info(part, indent + 1)
    else:
        content_type = msg.get_content_type()
        if content_type=='text/plain' or content_type=='text/html':
            content = msg.get_payload(decode=True)
            charset = guess_charset(msg)
            if charset:
                content = content.decode(charset)
            print('%sText: %s' % ('  ' * indent, content + '...'))
        else:
            print('%sAttachment: %s' % ('  ' * indent, content_type))

def re_mail():
    email = input ('email:')
    password = input('163的Password: ')
    pop3_server = 'pop.163.com'#input('POP3 SERVER: ')#pop.163.com
    server = poplib.POP3(pop3_server)
    #选择是否打开调试信息
    server.set_debuglevel(0)
    print(server.getwelcome().decode('utf-8'))
    server.user(email)
    server.pass_(password)

    print("message: %s.  Size:%s" %server.stat())
    resp,mails,octets = server.list()
    #看到上面list()返回的列表[b'1 82923',b'2 2184',....]
    print(mails)
    #获取最新的一封信
    index = len (mails)
    resp,lines,octets = server.retr(index)
    msg_content = b'\r\n'.join(lines).decode('utf-8')
    msg = Parser().parsestr(msg_content)
    print_info(msg)
    #print(msg)
    server.quit()
    return 1
          
    
def test():
    #send_mail()
    re_mail()
if __name__=='__main__':
    test()