python 获取错误日志，并发送邮件

最近做了一个小练习， 获取服务的错误日志，并发送邮件给对应的负责人， 记录一下代码

# -*- coding: utf-8 -*-
'''
发送错误日志
'''
import os
import smtplib
import time
import datetime

from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.application import MIMEApplication


def send_mail(to_list, sub, content):  # to_list：收件人；sub：主题；content：邮件内容
  mail_host = "smtp.jd.com"  # 设置服务器
  mail_user = ""  # 用户名
  mail_pass = ""  # 口令
  mail_postfix = ""  # 发件箱的后缀

  me = "错误日志" + "<" + mail_user + "@" + mail_postfix + ">"  # 这里的hello可以任意设置，收到信后，将按照设置显示
  msg = MIMEMultipart()
  msg['Subject'] = sub  # 设置主题
  msg['From'] = me
  msg['To'] = ";".join(to_list)
  # ---邮件正文---
  part = MIMEText(open(objectdir, 'r').read(),_charset='gb2312')  #将错误文件内容做为邮件正文内容
  msg.attach(part)

  # txt类型附件
  part = MIMEApplication(open(objectdir, 'rb').read())
  part.add_header('Content-Disposition', 'attachment', filename="error_log.txt")
  msg.attach(part)
  try:
    s = smtplib.SMTP()
    s.connect(mail_host)  # 连接smtp服务器
    s.login(mail_user, mail_pass)  # 登陆服务器
    s.sendmail(me, to_list, msg.as_string())  # 发送邮件
    s.close()
    return True
  except Exception, e:
    print str(e)
    return False

#获取错误日志内容
def getContent(resouce, final):
  f = open(resouce, 'rb')
  finalfile = open(final, 'wb')
  try:
    for line in f:
        if yes_date in line:
            if "ERROR" in line:  # 按行读取，如果该行包含“ERORR”字符串，则将该行写入目标文件
               finalfile.write(line)

  finally:
    f.close()
    finalfile.close()

# 获取昨天的时间，这块可以任意改成自己需要的时间
def get_yesterday_date():
  today = datetime.datetime.now()
  oneday = today - datetime.timedelta(days=1)
  yes_date = oneday.strftime("%Y-%m-%d")
  return yes_date


if __name__ == '__main__':
  sourcedir = "D:/catalina.out"  # 需要读取的源文件路径
  objectdir = "D:/error_log.txt"  # 存放的目标文件
  mailto_list = ["dfffg@qq.com"]#收件人邮箱，可以发送存放多个
  yes_date = get_yesterday_date()

  getContent(sourcedir, objectdir)
  if os.path.getsize(objectdir):
      if send_mail(mailto_list, "错误日志_"+yes_date,objectdir):
        print "发送成功"
      else:
        print "发送失败"
  else:
      print "无错误日志，未发送邮件"