python无法通过电子邮件发送附件文件

Question

我有以下代码工作正常，但它不会发送附件文件。

import smtplib 
import os 
from email.mime.multipart import MIMEMultipart 
from email.mime.text import MIMEText 
from email.MIMEBase import MIMEBase 
from email import Encoders 

msg=MIMEMultipart() 

def mymail(address,body,format,mylist=None): 

    msg['To']=address 
    msg['From']='ggous1@gmail.com' 
    if format=='txt': 
     text_msg=MIMEText(body,'plain') 
    elif format=='html': 
     text_msg=MIMEText(body,'html') 
    msg.attach(text_msg) 
    if mylist is not None: 
     mylist=[] 
     fn=[] 
     for f in range(len(mylist)): 
      direct=os.getcwd() 
      os.chdir(direct) 
      part=MIMEBase('application','octet-stream') 
      part.set_payload(open(mylist[f],'rb').read()) 
      Encoders.encode_base64(part) 
      part.add_header('Content-Disposition', 'attachment; filename="%s"' % os.path.basename(mylist[f])) 
      fn.append(part) 
      msg.attach(fn) 

    srv=smtplib.SMTP('smtp.gmail.com') 
    srv.set_debuglevel(1) 
    srv.ehlo() 
    srv.starttls() 
    srv.ehlo() 
    srv.login('username','pass') 
    srv.sendmail(msg['From'],msg['To'],msg.as_string()) 
    srv.quit() 

if __name__=="__main__": 
    address=raw_input('Enter an address to send email in the form "name@host.com" ') 
    body=raw_input('Enter the contents of the email') 
    format=raw_input('The format is txt or html?') 
    question=raw_input('Do you have any files to attach?Yes or No?') 
    mylist=[] 
    if question=='Yes' or question=='yes': 
     fn=raw_input('Enter filename') 
     mylist.append(fn) 

    mymail(address,body,format,mylist) 

我没有使用MIMEBase的权利，或者我的代码中有错误吗？

UPDATE ------------------------

if mylist is not None: 
     mylist=[] 
     fn=[] 
     for f in range(len(mylist)): 
      direct=os.getcwd() 
      os.chdir(direct) 
      fn[f]=open(mylist[f],'r')    
      part=msg.attach(MIMEApplication(fn[f])) 
      mylist.append(part) 

Answer 1

我会建议使用MIMEApplication而不是进行连接。您也不需要手动执行所有有效负载编码，因为这已经自动完成了。这个例子对我的作品：

from email.mime.text import MIMEText 
from email.mime.application import MIMEApplication 
from email.utils import formataddr 
from email.utils import make_msgid 
from email.utils import formatdate 

email = MIMEMultipart() 
email['From'] = formataddr(('Jane Doe', 'jane@example.com')) 
email['Subject'] = u'Test email' 
email['Message-Id'] = make_msgid() 
email['Date'] = formatdate(localtime=True) 
email.attach(MIMEText(u'This is your email contents.')) 
email.attach(MIMEApplication('your binary data')) 
print email.as_string() 

请注意，我也照顾到设定合适的日期以及Message-ID头在这里。

应用，为您的代码（和做一些小的清理）我得到以下工作代码：

import smtplib 
import os 
from email.mime.multipart import MIMEMultipart 
from email.mime.application import MIMEApplication 
from email.mime.text import MIMEText 
from email.utils import make_msgid 
from email.utils import formatdate 


def make_mail(address,body,format,mylist=[]): 
    msg = MIMEMultipart() 
    msg['To'] = address 
    msg['From'] = 'ggous1@gmail.com' 
    msg['Message-Id'] = make_msgid() 
    msg['Date'] = formatdate(localtime=True) 
    msg.attach(MIMEText(body, 'plain' if format == 'txt' else 'html')) 
    for filename in mylist: 
     part = MIMEApplication(open(filename).read()) 
     part.add_header('Content-Disposition', 
       'attachment; filename="%s"' % os.path.basename(filename)) 
     msg.attach(part) 
    return msg  

def send_mail(msg): 
    srv = smtplib.SMTP('smtp.gmail.com') 
    srv.set_debuglevel(1) 
    srv.ehlo() 
    srv.starttls() 
    srv.ehlo() 
    srv.login('username','pass') 
    srv.sendmail(msg['From'], msg['To'], msg.as_string()) 
    srv.quit() 

if __name__=="__main__": 
    address=raw_input('Enter an address to send email in the form "name@host.com" ') 
    body=raw_input('Enter the contents of the email') 
    format=raw_input('The format is txt or html?') 
    question=raw_input('Do you have any files to attach?Yes or No?') 
    mylist=[] 
    if question=='Yes' or question=='yes': 
     fn=raw_input('Enter filename') 
     mylist.append(fn) 

    msg = make_mail(address,body,format,mylist) 
    send_mail(msg)