def _replace(_self, **kwds):
result = _self._make(list(map(kwds.pop, ('<STR_LIT:a>', '<STR_LIT:b>', '<STR_LIT:size>'), _self)))<EOL>if kwds:<EOL><INDENT>raise ValueError('<STR_LIT>' % list(kwds.keys()))<EOL><DEDENT>return result<EOL>
Return a new Match object replacing specified fields with new values