python实现邮件循环自动发件功能

发邮件是一种很常见的操作，本篇主要介绍一下如何用python实现自动发件。

import smtplib
from email.mime.text import mimetext
from email.mime.multipart import mimemultipart
from email.header import header
from email.mime.image import mimeimage
import time
mail_host="smtp.126.com"
mail_user="[e-mail]"
mail_pass="******"#注意如果邮箱开启了授权码，此处要填写授权码，否则会报smtplib.smtpauthenticationerror: (535, b'error: authentication failed')
sender="[e-mail]"
receiver = ['邮箱1','邮箱2']#群发邮件
for i in range(n):#自定义循环发多少遍
	try:
		message = mimemultipart()
 	message["from"] = header(sender)
 	message["to"] = ','.join(receiver)
 	message["subject"] = header("主题", "utf-8").encode()#主题
 	message.attach(mimetext("正文", "plain", "utf-8"))#正文
 	"""
 	定附件
 	"""
 	att = mimetext(open(r'c:\users\administrator\desktop\1.txt').read(), "base64", "utf-8")
 	att["content-type"] = 'application/octet-stream'
 	 	att.add_header("content-disposition", 'attachment', filename="1.txt")#这一步可避免文件不能正常打开
 	message.attach(att)
 	"""
 	构造图片（以附件形式上传）
 	"""
 	image = mimeimage(open(r'c:\users\administrator\desktop\1.jpg', 'rb').read())
 	image.add_header('content-id', '<image1>')#可避免图片不能正常打开
 	image["content-disposition"] = 'attachment; filename="picture.jpg"'
 	message.attach(image)
 		"""
 		发送邮件
 		"""
 	smtp = smtplib.smtp_ssl(host=mail_host)
 	smtp.connect(host=mail_host, port=465)
 	smtp.login(mail_user, mail_pass)
 	smtp.sendmail(sender, message['to'].split(','), message.as_string())
 	print("在%s第" % ctime(), str(i+1), "封邮件发送")
 	smtp.quit()
	except smtplib.smtpexception as e:
  	raise e

最终实现

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