树莓派开机自动发送邮件脚本

开机联网后自动获取本机内网IP，并通过邮件或者server酱发送自己的内网IP

import smtplib
from email.mime.text import MIMEText
from email.header import Header
from email import encoders
from email.utils import parseaddr, formataddr
import requests
import json, re, os, sys, time


class EmailSender(object):
    def __init__(self, plain=""):
        self.text = plain
        self.info = self.get_info('info.json')
        self.ip = self.get_ip()
        self.message = MIMEText(self.text + '\n\n%s' % self.ip, 'plain', 'utf-8')
        self.message['Subject'] = Header('Raspberry pi !', 'utf-8').encode()
        self.message['From'] = self.format_addr(self.info['sender_email'])
        self.message['To'] = self.format_addr(self.info['recivers'][0])
        self.successflag = False

    def format_addr(self, s: str):
        name, addr = parseaddr(s)
        return formataddr((Header(name, 'utf-8').encode(), addr))

    def send(self):
        trytime = 10
        while trytime > 0:
            try:
                smtp = smtplib.SMTP()
                smtp.connect(self.info['smtp_server_host'], self.info['smtp_port'])
                smtp.login(self.info['login_name'], self.info['smtp_pass'])
                smtp.sendmail(self.info['sender_email'], self.info['recivers'], self.message.as_string())
                self.wechat_push()
                break
            except smtplib.SMTPException:
                trytime -= 1
                time.sleep(10)
            finally:
            	smtp.quit()

    def wechat_push(self):
    	# server酱微信推送 
        requests.get('https://sc.ftqq.com/%s.send' % self.info['sckey'], params=dict(text='Raspberry Pi', desp=self.ip))

    def get_info(self, fn: str) -> dict:
        try:
            if os.path.exists(fn) is True:
                with open(fn, 'r', encoding='utf-8') as f:
                    return json.load(f)
            else:
                sys.exit(-1)
        except IOError:
            sys.exit(-1)

    def get_ip(self) -> str:
        f = os.popen('ifconfig | grep inet | grep broadcast').read().strip(' ')
        ip = re.split(r'\s+', f)[1]
        return ip


if __name__ == '__main__':
    time.sleep(10)
    sender = EmailSender()
    sender.send()

发送时调用send()方法，考虑到刚启动可能没有联网，默认会尝试发送10次，每次间隔10秒，直到发送成功或者尝试次数耗尽；get_ip()方法有点那啥~最好找个更好的实现方法

附带的配置文件，和python脚本放在同一个目录下，命名为info.json

{
    "smtp_server_host": "smtp服务器host",
    "smtp_port": 		25,
    "name": 			"发信时显示的姓名",
    "sender_email": 	"发送邮箱",
    "login_name": 		"登录邮箱的用户名（不一定是邮箱本身~）",
    "smtp_pass": 		"验证密码（如果是QQ邮箱有专门的验证码，不是QQ密码）",
    "recivers": 		["接收方，可以有多个"],
    "sckey": 			"server酱的SCKEY，能推送到微信，可以注册一个~"
}