python （18）在linux中如何实现定时发送邮件

最近要用到，定时发送邮件功能：

如何定时，当然要用到linux中crontab了

如下的代码能够定时发送邮件

 #!/usr/bin/env python
 # -*- coding=utf-8 -*-
 import smtplib
 from email.mime.text import MIMEText
 import threading
 import time, datetime

 mailto_list=["lovychen@126.com"] #里面是对方的邮箱
 #-----------QQ邮箱发送设置----------------------
 mail_server="smtp.qq.com"#以qq邮箱为例子，里面是QQ邮箱的服务，换成其他邮箱需要更改服务
 mail_user=""#这是QQ邮箱的账号
 mail_pass=""#如果是其他的可以直接填上密码，如果用qq之类的，或者邮箱未开服务，会提醒你打开下面的链接
 #QQ邮箱需要去官方打开服务：http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=28&&no=1001256
 def send_mail(to_list, sub, content):
     msg = MIMEText(content,'plain','utf-8')
     msg["Accept-Language"]="zh-CN"
     msg["Accept-Charset"]="ISO-8859-1,utf-8"
     msg['Subject'] = sub
     msg['From'] = mail_user
     msg['To'] = ";".join(to_list)
     try:
         server = smtplib.SMTP()
         server.connect(mail_server)
         server.starttls()
         server.login(mail_user, mail_pass)
         server.sendmail(mail_user, to_list, msg.as_string())
         server.close()
         return True
     except Exception, e:
         print str(e)
         return False

 def getDate():
     return str(datetime.datetime.utcfromtimestamp(time.time())+datetime.timedelta(hours=8))

 def send_warning_mail(title, info):
     nowTime = getDate()
     try:
         t = threading.Thread(target=send_mail, args=(mailto_list, title, str(nowTime) + " | " + str(info)))
         t.start()
     except:pass
     # send_mail(mailto_list, "mysql异常", info)

 if __name__ == '__main__':
     send_warning_mail("this is title", "\nthis is content")
 #     print 111

这是能够加上附件的邮件发送：

 #!/usr/bin/env python
 #coding=utf-8
 import smtplib
 from email.MIMEText import MIMEText
 from email.MIMEMultipart import MIMEMultipart
 from email.MIMEBase import MIMEBase
 from email import Encoders
 import time
 mail_body='hello, this is the mail content'
 mail_from=''#发件人的邮箱
 mail_to=['']#收件人邮箱
 # 构造MIMEMultipart对象做为根容器
 msg=MIMEMultipart()

 # 构造MIMEText对象做为邮件显示内容并附加到根容器
 body=MIMEText(mail_body)
 msg.attach(body)

 # 构造MIMEBase对象做为文件附件内容并附加到根容器
 # 等同于如下3行
 #contype = 'application/octet-stream'
 #maintype, subtype = contype.split('/', 1)
 #part = MIMEBase(maintype, subtype)
 part = MIMEBase('application', 'octet-stream')

 # 读入文件内容并格式化，此处文件为当前目录下，也可指定目录 例如：open(r'/tmp/123.txt','rb')
 part.set_payload(open('123.txt','rb').read())
 Encoders.encode_base64(part)
 ## 设置附件头
 part.add_header('Content-Disposition', 'attachment; filename="herb.zip"')
 msg.attach(part)

 # 设置根容器属性
 msg['Subject']='this is the title'
 msg['From']=mail_from
 msg['To']=';'.join(mail_to)
 msg['date']=time.strftime('%a, %d %b %Y %H:%M:%S %z')
 #如上得到了格式化后的完整文本msg.as_string()
 #用smtp发送邮件
 smtp=smtplib.SMTP()
 smtp.connect('')#服务，如果是163的邮箱，就填上smtp.163.com
 smtp.login('发件的邮箱','发件的密码')
 smtp.sendmail(mail_from,mail_to,msg.as_string())
 smtp.quit()
 print 'ok'