old_contents: import sys
  import logging
  import socket
  logger = logging.getLogger("luigi-interface")
  
  
  DEFAULT_CLIENT_EMAIL = 'luigi-client@%s' % socket.getfqdn()
  DEBUG = False
  
  
  def send_email(subject, message, sender, recipients, image_png=None):
      logger.debug("Emailing:\n"
                  "-------------\n"
                  "To: %s\n"
                  "From: %s\n"
                  "Subject: %s\n"
                  "Message:\n"
                  "%s\n"
                  "-------------" % (recipients, sender, subject, message))
      if not recipients or recipients == (None,):
          return
      if sys.stdout.isatty() or DEBUG:
          logger.info("Not sending email when running from a tty or in debug mode")
          return
  
      import smtplib
      import email
      import email.mime
      import email.mime.multipart
      import email.mime.text
      import email.mime.image
  
      smtp = smtplib.SMTP('localhost')
  
      msg_root = email.mime.multipart.MIMEMultipart('related')
  
      msg_text = email.mime.text.MIMEText(message, 'plain')
      msg_text.set_charset('utf-8')
      msg_root.attach(msg_text)
  
      if image_png:
          fp = open(image_png, 'rb')
          msg_image = email.mime.image.MIMEImage(fp.read(), 'png')
          fp.close()
          msg_root.attach(msg_image)
  
      msg_root['Subject'] = subject
      msg_root['From'] = 'Luigi'
      msg_root['To'] = ','.join(recipients)
  
      smtp.sendmail(sender, recipients, msg_root.as_string())
  
new_contents: import sys
  import logging
  import socket
  logger = logging.getLogger("luigi-interface")
  
  
  DEFAULT_CLIENT_EMAIL = 'luigi-client@%s' % socket.getfqdn()
  DEBUG = False
  
  
  def send_email(subject, message, sender, recipients, image_png=None):
      logger.debug("Emailing:\n"
                  "-------------\n"
                  "To: %s\n"
                  "From: %s\n"
                  "Subject: %s\n"
                  "Message:\n"
                  "%s\n"
                  "-------------" % (recipients, sender, subject, message))
      if not recipients or recipients == (None,):
          return
      if sys.stdout.isatty() or DEBUG:
          logger.info("Not sending email when running from a tty or in debug mode")
          return
  
      import smtplib
      import email
      import email.mime
      import email.mime.multipart
      import email.mime.text
      import email.mime.image
  
      # Clean the recipients lists to allow multiple error-email addresses, comma
      # separated in client.cfg
      recipients_tmp = []
      for r in recipients:
          recipients_tmp.extend(r.split(','))
  
      # Replace original recipients with the clean list
      recipients = recipients_tmp
  
      smtp = smtplib.SMTP('localhost')
  
      msg_root = email.mime.multipart.MIMEMultipart('related')
  
      msg_text = email.mime.text.MIMEText(message, 'plain')
      msg_text.set_charset('utf-8')
      msg_root.attach(msg_text)
  
      if image_png:
          fp = open(image_png, 'rb')
          msg_image = email.mime.image.MIMEImage(fp.read(), 'png')
          fp.close()
          msg_root.attach(msg_image)
  
      msg_root['Subject'] = subject
      msg_root['From'] = 'Luigi'
      msg_root['To'] = ','.join(recipients)
  
      smtp.sendmail(sender, recipients, msg_root.as_string())
  
subject: Allow multiple comma separated email addresses for error-email in client.cfg