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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def attach(self, name, data=None, maintype=None, subtype=None, 		inline=False, filename=None, filename_charset='', filename_language='', 		encoding=None):
 		"""Attach a file to this message. 		:param name: Path to the file to attach if data is None, or the name 					 of the file if the ``data`` argument is given 		:param data: Contents of the file to attach, or None if the data is to 					 be read from the file pointed to by the ``name`` argument 		:type data: bytes or a file-like object 		:param maintype: First part of the MIME type of the file -- will be 						 automatically guessed if not given 		:param subtype: Second part of the MIME type of the file -- will be 						automatically guessed if not given 		:param inline: Whether to set the Content-Disposition for the file to 					 "inline" (True) or "attachment" (False) 		:param filename: The file name of the attached file as seen 									by the user in his/her mail client. 		:param filename_charset: Charset used for the filename paramenter. Allows for 						attachment names with characters from UTF-8 or Latin 1. See RFC 2231. 		:param filename_language: Used to specify what language the filename is in. See RFC 2231. 		:param encoding: Value of the Content-Encoding MIME header (e.g. "gzip" 						 in case of .tar.gz, but usually empty) 		"""

		self._dirty = True

		if not maintype:
			maintype, guessed_encoding = guess_type(name)
			encoding = encoding or guessed_encoding
			if not maintype:
				maintype, subtype = 'application', 'octet-stream'
			else:
				maintype, _, subtype = maintype.partition('/')

		part = MIMENonMultipart(maintype, subtype)
		part.add_header('Content-Transfer-Encoding', 'base64')

		if encoding:
			part.add_header('Content-Encoding', encoding)

		if data is None:
			with open(name, 'rb') as fp:
				value = fp.read()
			name = os.path.basename(name)
		elif isinstance(data, bytes):
			value = data
		elif hasattr(data, 'read'):
			value = data.read()
		else:
			raise TypeError("Unable to read attachment contents")
		
		part.set_payload(base64.encodestring(value))

		if not filename:
			filename = name
		filename = os.path.basename(filename)

		if filename_charset or filename_language:
			if not filename_charset:
				filename_charset = 'utf-8'
			# See https://docs.python.org/2/library/email.message.html#email.message.Message.add_header
			# for more information.
			# add_header() in the email module expects its arguments to be ASCII strings. Go ahead and handle
			# the case where these arguments come in as unicode strings, since encoding ASCII strings
			# as UTF-8 can't hurt.
			if sys.version_info < (3, 0):
				filename=(filename_charset.encode('utf-8'), filename_language.encode('utf-8'), filename.encode('utf-8'))
			else:
				filename=(filename_charset, filename_language, filename)
		
		if inline:
			if sys.version_info < (3, 0):
				part.add_header('Content-Disposition'.encode('utf-8'), 'inline'.encode('utf-8'), filename=filename)
				part.add_header('Content-ID'.encode('utf-8'), '<%s>'.encode('utf-8') % filename)
			else:	
				part.add_header('Content-Disposition', 'inline', filename=filename)
				part.add_header('Content-ID', '<%s>' % filename)
			self.embedded.append(part)
		else:
			if sys.version_info < (3, 0):
				part.add_header('Content-Disposition'.encode('utf-8'), 'attachment'.encode('utf-8'), filename=filename)
			else:
				part.add_header('Content-Disposition', 'attachment', filename=filename)
			self.attachments.append(part)