The Toy Parser Generator in the "tpg.py" file. It is licensed under the GNU LGPL 2.1 (or any later version). Original copyright notice:
Toy Parser Generator: A Python parser generator Copyright (C) 2001-2013 Christophe Delord This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA For further information about TPG you can visit http://cdsoft.fr/tpg