def attach(self, payload):
"""
Add the C{payload} to the current payload list.
Also prevent from adding payloads with wrong Content-Type and from
exceeding a maximum of 2 payloads.
:param payload: The payload to be attached.
:type payload: email.message.Message
"""
# first payload's content type must be equal to the protocol parameter
# given on object creation
if len(self._payload) == 0:
if payload.get_content_type() != self.get_param('protocol'):
raise errors.MultipartConversionError('Wrong content type.')
# second payload is always application/octet-stream
if len(self._payload) == 1:
if payload.get_content_type() != 'application/octet-stream':
raise errors.MultipartConversionError(
'Wrong content type %s.' % payload.get_content_type)
# prevent from adding more payloads
if len(self._payload) == 2:
raise errors.MultipartConversionError(
'Cannot have more than two subparts.')
MIMEMultipart.attach(self, payload)
def attach(self, payload):
raise errors.MultipartConversionError('Cannot attach additional subparts to non-multipart/*')
def attach(self, payload):
# The public API prohibits attaching multiple subparts to MIMEBase
# derived subtypes since none of them are, by definition, of content
# type multipart/*
raise errors.MultipartConversionError(
'Cannot attach additional subparts to non-multipart/*')
