要想實現(xiàn)一個能夠發(fā)送帶有文本、圖片、附件的python程序，首先要熟悉兩大模塊：

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email以及smtplib

然后對于MIME（郵件擴展）要有一定認知，因為有了擴展才能發(fā)送附件以及圖片這些媒體或者非文本信息

最后一個比較細節(jié)的方法就是MIMEMultipart，要理解其用法以及對應(yīng)參數(shù)所實現(xiàn)的功能區(qū)別

發(fā)送郵件三部曲：

創(chuàng)建協(xié)議對象
連接郵件服務(wù)器
登陸并發(fā)送郵件

from email.header import Header
from email.mime.base import MIMEBase
from email.mime.text import MIMEText
import mimetypes

from email.mime.multipart import MIMEMultipart
import os
import smtplib

from email import Encoders as email_encoders


class Message(object):
 def __init__(self, from_addr, to_addr, subject="", html="", text=None, cc_addr=[], attachment=[]):

  self.from_addr = from_addr
  self.subject = subject

  if to_addr:
   if isinstance(to_addr, list):
    self.to_addr = to_addr
   else:
    self.to_addr = [d for d in to_addr.split(',')]
  else:
   self.to_addr = []

  if cc_addr:
   if isinstance(cc_addr, list):
    self.cc_addr = cc_addr
   else:
    self.cc_addr = [d for d in cc_addr.split(',')]
  else:
   self.cc_addr = []

  if html is not None:
   self.body = html
   self.body_type = "html"
  else:
   self.body = text
   self.body_type = "plain"

  self.parts = []
  if isinstance(attachment, list):
   for file in attachment:
    self.add_attachment(file)

 def add_attachment(self, file_path, mimetype=None):
  """
   If *mimetype* is not specified an attempt to guess it is made. If nothing
   is guessed then `application/octet-stream` is used.
  """
  if not mimetype:
   mimetype, _ = mimetypes.guess_type(file_path)

  if mimetype is None:
   mimetype = 'application/octet-stream'

  type_maj, type_min = mimetype.split('/')
  with open(file_path, 'rb') as fh:
   part_data = fh.read()

   part = MIMEBase(type_maj, type_min)
   part.set_payload(part_data)
   email_encoders.encode_base64(part)

   part_filename = os.path.basename(file_path)
   part.add_header('Content-Disposition', 'attachment; filename="%s"'
       % part_filename)
   part.add_header('Content-ID', part_filename)

   self.parts.append(part)

 def __to_mime_message(self):
  """Returns the message as
  :py:class:`email.mime.multipart.MIMEMultipart`."""

  ## To get the message work in iOS, you need use multipart/related, not the multipart/alternative
  msg = MIMEMultipart('related')
  msg['Subject'] = self.subject
  msg['From'] = self.from_addr
  msg['To'] = ','.join(self.to_addr)

  if len(self.cc_addr) > 0:
   msg['CC'] = ','.join(self.cc_addr)

  body = MIMEText(self.body, self.body_type)
  msg.attach(body)

  # Add Attachment
  for part in self.parts:
   msg.attach(part)

  return msg

 def send(self, smtp_server='localhost'):

  smtp = smtplib.SMTP()
  smtp.connect(smtp_server)
  smtp.sendmail(from_addr=self.from_addr, to_addrs=self.to_addr + self.cc_addr, msg=self.__to_mime_message().as_string())
  smtp.close()

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標題名稱：python2.7實現(xiàn)郵件發(fā)送功能-創(chuàng)新互聯(lián)
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