def ImportMail(self, user_name, mail_message, mail_item_properties,
                 mail_labels):
    """Imports a single mail message.

    Args:
      user_name: The username to import messages to.
      mail_message: An RFC822 format email message.
      mail_item_properties: A list of Gmail properties to apply to the message.
      mail_labels: A list of labels to apply to the message.

    Returns:
      A MailEntry representing the successfully imported message.

    Raises:
      AppsForYourDomainException: An error occurred importing the message.
    """
    uri = (self._BaseURL(), user_name) % '%s/%s/mail'

    mail_entry = migration.MailEntry()
    mail_entry.rfc822_msg = migration.Rfc822Msg(text=(base64.b64encode(
        mail_message)))
    mail_entry.rfc822_msg.encoding = 'base64'
    mail_entry.mail_item_property = [migration.MailItemProperty(value=x) for x in mail_item_properties]
    mail_entry.label = [migration.Label(label_name=x) for x in mail_labels]

    try:
      return migration.MailEntryFromString(str(self.Post(mail_entry, uri)))
    except gdata.service.RequestError as e:
      # Store the number of failed imports when importing several at a time 
      self.exceptions += 1
      raise gdata.apps.service.AppsForYourDomainException(e.args[0])
dataset/ETHPy150Open kuri65536/python-for-android/python3-alpha/python-libs/gdata/apps/migration/service.py/MigrationService.ImportMail/swapped operands of `%`