def pack_into(self, buf, offset, *args, **kwargs):
<EOL>if len(args) < self._number_of_arguments:<EOL><INDENT>raise Error(<EOL>"<STR_LIT>".format(<EOL>self._number_of_arguments,<EOL>len(args)))<EOL><DEDENT>self.pack_into_any(buf, offset, args, **kwargs)<EOL>
See :func:`~bitstruct.pack_into()`.