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<meta content="Portable Scientific Python 2/3 32/64bit Distribution for Windows" name="description" />

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<ul>

<li><a href="#releases">releases</a></li>

<li><a href="#overview">overview</a></li>

<li><a href="#portable">portable</a></li>

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<h1><img style="width: 350px; height: 92px;" alt="WinPython" src="images/winpython_title.png" /></h1>

<p id="title_sub">The easiest way to run Python, Spyder with SciPy and friends on any Windows PC, without installing anything!</p>

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<div id="content">

<p>We are currently reorganizing the project structure. The project home, including source code and build documentation, can be found in our <a href="https://github.com/winpython">Github organization winpython</a>, the <a href="https://sourceforge.net/projects/stonebig.u/files/">downloads page</a> is currently on Sourceforge, the <a href="https://groups.google.com/d/forum/winpython">Discussion group</a> on Google Groups, and our <a href="https://github.com/winpython/winpython/issues">Tickets</a> are also now on Github (but the old ones are <a href="https://sourceforge.net/p/winpython/tickets/?source=navbar">on Sourceforge</a>).</p>

<h2 id="releases">Recent Releases</h2>

<p>Released in <strong>October 2014</strong>:</p>

<ul>

<li>WinPython <strong>2.7.8.2</strong>, <a href="https://github.com/winpython/winpython/blob/master/changelogs/WinPython-2.7.8.2_History.txt">Release Information</a>. Downloads: <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_2.7/WinPython-32bit-2.7.8.2.exe/download">32bit</a> and <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_2.7/WinPython-64bit-2.7.8.2.exe/download">64bit</a></li>

<li>WinPython <strong>3.3.5.2</strong>, <a href="https://github.com/winpython/winpython/blob/master/changelogs/WinPython-3.3.5.2_History.txt">Release Information</a>. Downloads: <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_3.3/WinPython-32bit-3.3.5.2.exe/download">32bit</a> and <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_3.3/WinPython-64bit-3.3.5.2.exe/download">64bit</a></li>

<li>WinPython <strong>3.4.2.1</strong>, <a href="https://github.com/winpython/winpython/blob/master/changelogs/WinPython-3.4.2.1_History.txt">Release Information</a>. Downloads: <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_3.4/WinPython-32bit-3.4.2.1.exe/download">32bit</a> and <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_3.4/WinPython-64bit-3.4.2.1.exe/download">64bit</a></li>

</ul>

<p>Released in <strong>August 2014</strong>:</p>

<ul>

<li>WinPython <strong>2.7.8.1</strong>, <a href="https://github.com/winpython/winpython/blob/master/changelogs/WinPython-2.7.8.1_History.txt">Release Information</a>. Downloads: <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_2.7/WinPython-32bit-2.7.8.1.exe/download">32bit</a> and <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_2.7/WinPython-64bit-2.7.8.1.exe/download">64bit</a></li>

<li>WinPython <strong>3.3.5.1</strong>, <a href="https://github.com/winpython/winpython/blob/master/changelogs/WinPython-3.3.5.1_History.txt">Release Information</a>. Downloads: <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_3.3/WinPython-32bit-3.3.5.1.exe/download">32bit</a> and <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_3.3/WinPython-64bit-3.3.5.1.exe/download">64bit</a></li>

<li>WinPython <strong>3.4.1.1</strong>, <a href="https://github.com/winpython/winpython/blob/master/changelogs/WinPython-3.4.1.1_History.txt">Release Information</a>. Downloads: <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_3.4/WinPython-32bit-3.4.1.1.exe/download">32bit</a> and <a href="https://sourceforge.net/projects/stonebig.u/files/Winpython_3.4/WinPython-64bit-3.4.1.1.exe/download">64bit</a></li>

</ul>

<p>Older releases can be found at the <a href="https://sourceforge.net/projects/winpython/files/">Downloads page of the former maintainer</a> and creator Pierre Raybaut, but note that they may be outdated.</p>

<h2 id="overview">Overview</h2>

<p>WinPython is a free open-source portable distribution of the <a href="https://www.python.org/">Python programming language</a> for Windows XP/7/8, designed for scientists, supporting both 32bit and 64bit versions of Python 2 and Python 3.</p>

<p><img style="width: 901px; height: 97px;" alt="WinPython Launcher Icons" src="images/winpython_launchers_2741.png" /></p>

<p>It is a full-featured (see what's inside <a href="https://sourceforge.net/p/winpython/wiki/PackageIndex_27/">WinPython 2.7</a> or <a href="https://sourceforge.net/p/winpython/wiki/PackageIndex_33/">WinPython 3.3</a>) Python-based scientific environment:</p>

<ul>

<li>Designed for scientists (thanks to the integrated libraries <a href="http://numpy.org/">NumPy</a>, <a href="https://www.scipy.org/">SciPy</a>, <a href="http://www.matplotlib.org/">Matplotlib</a>, <a href="https://code.google.com/p/guiqwt/">guiqwt</a>, etc.):

<ul>

<li>Regular <strong>scientific users</strong>: interactive data processing and visualization using Python with <a href="https://code.google.com/p/spyderlib/">Spyder</a> </li>

<li><strong>Advanced scientific users and software developers</strong>: Python applications development with <a href="https://code.google.com/p/spyderlib/">Spyder</a>, version control with Mercurial and other development tools (like gettext, etc.)</li>

</ul></li>

<li><strong>Portable</strong>: preconfigured, it should run out of the box on any machine under Windows (<a href="https://sourceforge.net/p/winpython/wiki/Installation"><!-- TODO -->without any requirement</a>) and the folder containing WinPython can be moved to any location (local, network or removable drive) with most of the <a href="https://code.google.com/p/winpython/wiki/Installation#Settings">application settings</a></li>

<li><strong>Flexible</strong>: one can install (or should I write "use" as it's portable) as many WinPython versions as necessary (like isolated and self-consistent environments), even if those versions are running different versions of Python (2.7, 3.3) or different architectures (32bit or 64bit) on the same machine </li>

<li><strong>Customizable</strong>:

<ul>

<li>The integrated package manager (wppm, as WinPython Package Manager) helps installing, uninstalling or upgrading Python packages (see <a href="https://sourceforge.net/p/winpython/wiki/WPPM"><!-- TODO -->WPPM wiki page</a> for more details on supported package formats) </li>

<li>As <a href="https://sourceforge.net/p/winpython/wiki/WPPM"><!-- TODO -->WPPM</a> may not support some packages, it's also possible to install or upgrade packages using <tt>easy_install</tt> or <tt>pip</tt> from the WinPython command prompt </li>

<li>A configuration file allows to set <a href="https://sourceforge.net/p/winpython/wiki/Environment"><!-- TODO -->environment variables</a> at runtime </li>

</ul></li>

</ul>

<p>WinPython vs. Python(x,y): <strong>WinPython is not an attempt to replace <a href="https://code.google.com/p/pythonxy/">Python(x,y)</a></strong>, this is just something different (see <a href="https://sourceforge.net/p/winpython/wiki/Roadmap"><!-- TODO -->motivation and concept</a>): more flexible, easier to maintain, movable and less invasive for the OS, but certainly less user-friendly, with less packages/contents and without any integration to Windows explorer.</p>

<div class="centered"><img style="width: 125px; height: 45px;" alt="WinPython Small Logos" src="images/small_logos.png" /></div>

<h2 id="portable">Portable or not, the choice is yours!</h2>

<p>WinPython is a portable application, so the user should not expect any integration into Windows explorer during <a href="https://sourceforge.net/p/winpython/wiki/Installation"><!-- TODO -->installation</a>. However, the <a href="https://sourceforge.net/p/winpython/wiki/ControlPanel"><!-- TODO -->WinPython Control Panel</a> allows to "register" your distribution to Windows (see screenshot below).</p>

<p><img style="width: 453px; height: 152px;" alt="WinPython Register" src="images/wpcp_register_2741.png" /></p>

<p>Registering your WinPython installation will:</p>

<ul>

<li>associate file extensions <tt>.py</tt>, <tt>.pyc</tt> and <tt>.pyo</tt> to Python interpreter</li>

<li>register Python icons in Windows explorer</li>

<li>add context menu entries <tt>Edit with IDLE</tt> and <tt>Edit with Spyder</tt> for <tt>.py</tt> files</li>

<li>register WinPython as a standard Python distribution (standard Python Windows installers will see WinPython in Windows registry)</li>

</ul>

That is exactly what the official Python installer would do to your machine: in other words, you can have it both ways!

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<div id="footer">© Copyright 2009-2013, Pierre Raybaut; 2014 <a href="https://github.com/winpython/">The Winpython Developement Team</a>. Last updated 2014-10-18</div>