parameters: (self, _msg, _subtype='rfc822')
docstring: Create a message/* type MIME document.
  
          _msg is a message object and must be an instance of Message, or a
          derived class of Message, otherwise a TypeError is raised.
  
          Optional _subtype defines the subtype of the contained message.  The
          default is "rfc822" (this is defined by the MIME standard, even though
          the term "rfc822" is technically outdated by RFC 2822).
docstring_summary: Create a message/* type MIME document.
docstring_tokens: Create a message / * type MIME document .
function: def __init__(self, _msg, _subtype='rfc822'):
          """Create a message/* type MIME document.
  
          _msg is a message object and must be an instance of Message, or a
          derived class of Message, otherwise a TypeError is raised.
  
          Optional _subtype defines the subtype of the contained message.  The
          default is "rfc822" (this is defined by the MIME standard, even though
          the term "rfc822" is technically outdated by RFC 2822).
          """
          MIMENonMultipart.__init__(self, 'message', _subtype)
          if not isinstance(_msg, message.Message):
              raise TypeError('Argument is not an instance of Message')
          # It's convenient to use this base class method.  We need to do it
          # this way or we'll get an exception
          message.Message.attach(self, _msg)
          # And be sure our default type is set correctly
          self.set_default_type('message/rfc822')
function_tokens: def __init__ ( self , _msg , _subtype = 'rfc822' ) : MIMENonMultipart . __init__ ( self , 'message' , _subtype ) if not isinstance ( _msg , message . Message ) : raise TypeError ( 'Argument is not an instance of Message' ) # It's convenient to use this base class method.  We need to do it # this way or we'll get an exception message . Message . attach ( self , _msg ) # And be sure our default type is set correctly self . set_default_type ( 'message/rfc822' )