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<!DOCTYPE html>

<head>

<title>License — Matplotlib 3.7.3 documentation</title>

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<span id="id1"></span><h1>License<a class="headerlink" href="#license" title="Permalink to this heading">#</a></h1>

<p>Matplotlib only uses BSD compatible code, and its license is based on

the <a class="reference external" href="https://docs.python.org/3/license.html">PSF</a> license. See the Open

Source Initiative <a class="reference external" href="https://opensource.org/licenses">licenses page</a> for details on individual

licenses. Non-BSD compatible licenses (e.g., LGPL) are acceptable in

matplotlib toolkits. For a discussion of the motivations behind the

licencing choice, see <a class="reference internal" href="../../devel/license.html#license-discussion"><span class="std std-ref">Licenses</span></a>.</p>

<h2>Copyright policy<a class="headerlink" href="#copyright-policy" title="Permalink to this heading">#</a></h2>

<p>John Hunter began Matplotlib around 2003. Since shortly before his

passing in 2012, Michael Droettboom has been the lead maintainer of

Matplotlib, but, as has always been the case, Matplotlib is the work

of many.</p>

source code was held by John Hunter. As of July 2013, and the 1.3.0

release, matplotlib has moved to a shared copyright model.</p>

<p>Matplotlib uses a shared copyright model. Each contributor maintains

note that these contributions are typically only changes to the

repositories. Thus, the Matplotlib source code, in its entirety, is not

the copyright of any single person or institution. Instead, it is the

collective copyright of the entire Matplotlib Development Team. If

individual contributors want to maintain a record of what

changes/contributions they have specific copyright on, they should

indicate their copyright in the commit message of the change, when

they commit the change to one of the matplotlib repositories.</p>

<p>The Matplotlib Development Team is the set of all contributors to the

matplotlib project. A full list can be obtained from the git version

control logs.</p>

</section>

<span id="id2"></span><h2>License agreement<a class="headerlink" href="#license-agreement" title="Permalink to this heading">#</a></h2>

<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>License agreement for matplotlib versions 1.3.0 and later

=========================================================

1. This LICENSE AGREEMENT is between the Matplotlib Development Team

("MDT"), and the Individual or Organization ("Licensee") accessing and

otherwise using matplotlib software in source or binary form and its

associated documentation.

2. Subject to the terms and conditions of this License Agreement, MDT

hereby grants Licensee a nonexclusive, royalty-free, world-wide license

to reproduce, analyze, test, perform and/or display publicly, prepare

derivative works, distribute, and otherwise use matplotlib

alone or in any derivative version, provided, however, that MDT's

License Agreement and MDT's notice of copyright, i.e., "Copyright (c)

matplotlib alone or in any derivative version prepared by

Licensee.

3. In the event Licensee prepares a derivative work that is based on or

incorporates matplotlib or any part thereof, and wants to

make the derivative work available to others as provided herein, then

Licensee hereby agrees to include in any such work a brief summary of

the changes made to matplotlib .

4. MDT is making matplotlib available to Licensee on an "AS

IS" basis. MDT MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR

IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, MDT MAKES NO AND

DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS

FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF MATPLOTLIB

WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.

5. MDT SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF MATPLOTLIB

FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR

LOSS AS A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING

MATPLOTLIB , OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF

THE POSSIBILITY THEREOF.

6. This License Agreement will automatically terminate upon a material

breach of its terms and conditions.

7. Nothing in this License Agreement shall be deemed to create any

relationship of agency, partnership, or joint venture between MDT and

Licensee. This License Agreement does not grant permission to use MDT

trademarks or trade name in a trademark sense to endorse or promote

products or services of Licensee, or any third party.

8. By copying, installing or otherwise using matplotlib ,

Licensee agrees to be bound by the terms and conditions of this License

Agreement.

License agreement for matplotlib versions prior to 1.3.0

========================================================

1. This LICENSE AGREEMENT is between John D. Hunter ("JDH"), and the

Individual or Organization ("Licensee") accessing and otherwise using

matplotlib software in source or binary form and its associated

documentation.

2. Subject to the terms and conditions of this License Agreement, JDH

hereby grants Licensee a nonexclusive, royalty-free, world-wide license

to reproduce, analyze, test, perform and/or display publicly, prepare

derivative works, distribute, and otherwise use matplotlib

alone or in any derivative version, provided, however, that JDH's

License Agreement and JDH's notice of copyright, i.e., "Copyright (c)

matplotlib alone or in any derivative version prepared by

Licensee.

3. In the event Licensee prepares a derivative work that is based on or

incorporates matplotlib or any part thereof, and wants to

make the derivative work available to others as provided herein, then

Licensee hereby agrees to include in any such work a brief summary of

the changes made to matplotlib.

4. JDH is making matplotlib available to Licensee on an "AS

IS" basis. JDH MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR

IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, JDH MAKES NO AND

DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS

FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF MATPLOTLIB

WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.

5. JDH SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF MATPLOTLIB

FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR

LOSS AS A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING

MATPLOTLIB , OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF

THE POSSIBILITY THEREOF.

6. This License Agreement will automatically terminate upon a material

breach of its terms and conditions.

7. Nothing in this License Agreement shall be deemed to create any

relationship of agency, partnership, or joint venture between JDH and

Licensee. This License Agreement does not grant permission to use JDH

trademarks or trade name in a trademark sense to endorse or promote

products or services of Licensee, or any third party.

8. By copying, installing or otherwise using matplotlib,

Licensee agrees to be bound by the terms and conditions of this License

Agreement.

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