# License

IPython is released under the terms of the BSD license, whose general form can be found at: `http://www.opensource.org/licenses/bsd-license.php`. The full text of the IPython license is reproduced below:

> `IPython is released under a BSD-type license.`

> `Copyright (c) 2001, 2002, 2003, 2004 Fernando Perez <fperez@colorado.edu>.`

> `Copyright (c) 2001 Janko Hauser <jhauser@zscout.de> and`
> `Nathaniel Gray <n8gray@caltech.edu>.`

> `All rights reserved.`

> `Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:`

> `a. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.`

> `b. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.`

> `c. Neither the name of the copyright holders nor the names of any contributors to this software may be used to endorse or promote products derived from this software without specific prior written permission.`

> `THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.`

Individual authors are the holders of the copyright for their code and are listed in each file.

Some files (`DPyGetOpt.py`, for example) may be licensed under different conditions. Ultimately each file indicates clearly the conditions under which its author/authors have decided to publish the code.

Versions of IPython up to and including 0.6.3 were released under the GNU Lesser General Public License (LGPL), available at `http://www.gnu.org/copyleft/lesser.html`.