本文實例為大家分享了python發送郵件的具體代碼，供大家參考，具體內容如下

#!/usr/bin/env python # -*- coding: utf-8 -*- import smtplib import sys from email.mime.text import MIMEText import linecache import email import os   ##################### # set email service host,user,pass word,postfix mail_host="smtp.exmail.qq.com" mail_user="username" mail_pass="password" mail_postfix="qq.com" ######################  def transfer_utf8_to_gb2312(file_name):  f=open(file_name)  s=f.read()  f.close()  u=s.decode("utf-8")  s=u.encode("gb2312")  f=open(file_name,"w");  f.write(s)   def send_mail(to_list,sub,content_file_name):  me=mail_user+"<"+mail_user+"@"+mail_postfix+">"  msg = email.MIMEMultipart.MIMEMultipart()  content = open(content_file_name.encode("utf-8"), 'rb')  content_msg = MIMEText(content.read(),"plain","utf-8")  msg.attach(content_msg)  msg['Subject'] = sub  msg['From'] = me  msg['To'] = ";".join(to_list)  try:   s = smtplib.SMTP()   s.connect(mail_host)   s.login(mail_user+"@"+mail_postfix,mail_pass)   s.sendmail(me, to_list, msg.as_string())   s.close()   return True  except Exception, e:   print "error:",str(e)   return False  def send_mail_with_attachment(to_list,sub,content_file_name,attachment_file_name):  me=mail_user+"<"+mail_user+"@"+mail_postfix+">"  msg = email.MIMEMultipart.MIMEMultipart()  content = open(content_file_name.encode("utf-8"), 'rb')  content_msg = MIMEText(content.read(),"plain","utf-8")  msg.attach(content_msg)  for tmp_attachment_file_name in attachment_file_name.split(","):   contype = 'application/octet-stream'   maintype, subtype = contype.split('/', 1)   file_data = open(tmp_attachment_file_name.encode("utf-8"), 'rb')   file_msg = email.MIMEBase.MIMEBase(maintype, subtype)   file_msg.set_payload(file_data.read())   file_data.close( )   email.Encoders.encode_base64(file_msg)   basename = os.path.basename(tmp_attachment_file_name)   file_msg.add_header('Content-Disposition', 'attachment', filename = basename.encode("utf-8"))   msg.attach(file_msg)  msg['Subject'] = sub  msg['From'] = me  msg['To'] = ";".join(to_list)  try:   s = smtplib.SMTP()   s.connect(mail_host)   s.login(mail_user+"@"+mail_postfix,mail_pass)   s.sendmail(me, to_list, msg.as_string())   s.close()   return True  except Exception, e:   print "error:",str(e)   return False  def print_usage():   print "Usage: "   print "  %s email_send_list(xxx@163.com,xxx@qq.com,...) subject content_file_name" % (sys.argv[0])   print "  %s email_send_list(xxx@163.com,xxx@qq.com,...) subject content_file_name attachment_file_name(file_name1,file_name2,...) if_transform_attachment_to_gb2312(yes or not)" % (sys.argv[0])  ######Start from here######### if __name__ == '__main__':  reload(sys)  sys.setdefaultencoding('utf8')  if len(sys.argv) == 6:   send_list = sys.argv[1].split(",")   subject = unicode(sys.argv[2],"utf-8")   content_file_name = unicode(sys.argv[3],"utf-8")   attachment_file_name = unicode(sys.argv[4],"utf-8")   if(sys.argv[5] == "yes"):    transfer_utf8_to_gb2312(attachment_file_name.decode("utf-8"))   elif(sys.argv[5] == "not"):    pass   else:    print_usage()    if send_mail_with_attachment(send_list,subject,content_file_name,attachment_file_name):    print "Send email success!"   else:    print "Send email fail!"    sys.exit(1)  elif len(sys.argv) == 4:   send_list = sys.argv[1].split(",")   subject = unicode(sys.argv[2],"utf-8")   content_file_name = unicode(sys.argv[3],"utf-8")    if send_mail(send_list,subject,content_file_name):    print "Send email success!"   else:    print "Send email fail!"    sys.exit(1)  else:   print_usage()