code: def embed(self, name, data=None):
  		
  		if data is None:
  			with open(name, 'rb') as fp:
  				data = fp.read()
  			name = os.path.basename(name)
  		elif isinstance(data, bytes):
  			pass
  		elif hasattr(data, 'read'):
  			data = data.read()
  		else:
  			raise TypeError("Unable to read image contents")
  
  		subtype = imghdr.what(None, data)
  		self.attach(name, data, 'image', subtype, True)
docs: Attach an image file and prepare for HTML embedding.
  
  		This method should only be used to embed images.
  
  		:param name: Path to the image to embed if data is None, or the name
  					 of the file if the ``data`` argument is given
  		:param data: Contents of the image to embed, or None if the data is to
  					 be read from the file pointed to by the ``name`` argument