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<div class="section" id="virtualenvwrapper-release">
<h1>virtualenvwrapper 3.3<a class="headerlink" href="#virtualenvwrapper-release" title="Permalink to this headline">¶</a></h1>
<p>virtualenvwrapper is a set of extensions to Ian Bicking’s <a class="reference external" href="http://pypi.python.org/pypi/virtualenv">virtualenv</a> tool. The extensions
include wrappers for creating and deleting virtual environments and
otherwise managing your development workflow, making it easier to work
on more than one project at a time without introducing conflicts in
their dependencies.</p>
<div class="section" id="features">
<h2>Features<a class="headerlink" href="#features" title="Permalink to this headline">¶</a></h2>
<ol class="arabic simple">
<li>Organizes all of your virtual environments in one place.</li>
<li>Wrappers for managing your virtual environments (create, delete,
copy).</li>
<li>Use a single command to switch between environments.</li>
<li>Tab completion for commands that take a virtual environment as
argument.</li>
<li>User-configurable hooks for all operations (see <a class="reference internal" href="scripts.html#scripts"><em>Per-User Customization</em></a>).</li>
<li>Plugin system for more creating sharable extensions (see
<a class="reference internal" href="plugins.html#plugins"><em>Extending Virtualenvwrapper</em></a>).</li>
</ol>
</div>
<div class="section" id="introduction">
<h2>Introduction<a class="headerlink" href="#introduction" title="Permalink to this headline">¶</a></h2>
<p>The best way to explain the features virtualenvwrapper gives you is to
show it in use.</p>
<p>First, some initialization steps. Most of this only needs to be done
one time. You will want to add the command to <tt class="docutils literal"><span class="pre">source</span>
<span class="pre">/usr/local/bin/virtualenvwrapper.sh</span></tt> to your shell startup file,
changing the path to virtualenvwrapper.sh depending on where it was
installed by pip.</p>
<div class="highlight-python"><pre>$ pip install virtualenvwrapper
...
$ export WORKON_HOME=~/Envs
$ mkdir -p $WORKON_HOME
$ source /usr/local/bin/virtualenvwrapper.sh
$ mkvirtualenv env1
Installing
distribute..........................................
....................................................
....................................................
...............................done.
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env1/bin/predeactivate
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env1/bin/postdeactivate
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env1/bin/preactivate
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env1/bin/postactivate New python executable in env1/bin/python
(env1)$ ls $WORKON_HOME
env1 hook.log</pre>
</div>
<p>Now we can install some software into the environment.</p>
<div class="highlight-python"><pre>(env1)$ pip install django
Downloading/unpacking django
Downloading Django-1.1.1.tar.gz (5.6Mb): 5.6Mb downloaded
Running setup.py egg_info for package django
Installing collected packages: django
Running setup.py install for django
changing mode of build/scripts-2.6/django-admin.py from 644 to 755
changing mode of /Users/dhellmann/Envs/env1/bin/django-admin.py to 755
Successfully installed django</pre>
</div>
<p>We can see the new package with <tt class="docutils literal"><span class="pre">lssitepackages</span></tt>:</p>
<div class="highlight-python"><pre>(env1)$ lssitepackages
Django-1.1.1-py2.6.egg-info easy-install.pth
distribute-0.6.10-py2.6.egg pip-0.6.3-py2.6.egg
django setuptools.pth</pre>
</div>
<p>Of course we are not limited to a single virtualenv:</p>
<div class="highlight-python"><pre>(env1)$ ls $WORKON_HOME
env1 hook.log
(env1)$ mkvirtualenv env2
Installing distribute...............................
....................................................
....................................................
........... ...............................done.
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env2/bin/predeactivate
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env2/bin/postdeactivate
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env2/bin/preactivate
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env2/bin/postactivate New python executable in env2/bin/python
(env2)$ ls $WORKON_HOME
env1 env2 hook.log</pre>
</div>
<p>Switch between environments with <tt class="docutils literal"><span class="pre">workon</span></tt>:</p>
<div class="highlight-python"><pre>(env2)$ workon env1
(env1)$ echo $VIRTUAL_ENV
/Users/dhellmann/Envs/env1
(env1)$</pre>
</div>
<p>The <tt class="docutils literal"><span class="pre">workon</span></tt> command also includes tab completion for the
environment names, and invokes customization scripts as an environment
is activated or deactivated (see <a class="reference internal" href="scripts.html#scripts"><em>Per-User Customization</em></a>).</p>
<div class="highlight-python"><pre>(env1)$ echo 'cd $VIRTUAL_ENV' >> $WORKON_HOME/postactivate
(env1)$ workon env2
(env2)$ pwd
/Users/dhellmann/Envs/env2</pre>
</div>
<p><a class="reference internal" href="scripts.html#scripts-postmkvirtualenv"><em>postmkvirtualenv</em></a> is run when a new environment is
created, letting you automatically install commonly-used tools.</p>
<div class="highlight-python"><pre>(env2)$ echo 'pip install sphinx' >> $WORKON_HOME/postmkvirtualenv
(env3)$ mkvirtualenv env3
New python executable in env3/bin/python
Installing distribute...............................
....................................................
....................................................
........... ...............................done.
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env3/bin/predeactivate
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env3/bin/postdeactivate
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env3/bin/preactivate
virtualenvwrapper.user_scripts Creating /Users/dhellmann/Envs/env3/bin/postactivate
Downloading/unpacking sphinx
Downloading Sphinx-0.6.5.tar.gz (972Kb): 972Kb downloaded
Running setup.py egg_info for package sphinx
no previously-included directories found matching 'doc/_build'
Downloading/unpacking Pygments>=0.8 (from sphinx)
Downloading Pygments-1.3.1.tar.gz (1.1Mb): 1.1Mb downloaded
Running setup.py egg_info for package Pygments
Downloading/unpacking Jinja2>=2.1 (from sphinx)
Downloading Jinja2-2.4.tar.gz (688Kb): 688Kb downloaded
Running setup.py egg_info for package Jinja2
warning: no previously-included files matching '*' found under directory 'docs/_build/doctrees'
Downloading/unpacking docutils>=0.4 (from sphinx)
Downloading docutils-0.6.tar.gz (1.4Mb): 1.4Mb downloaded
Running setup.py egg_info for package docutils
Installing collected packages: docutils, Jinja2, Pygments, sphinx
Running setup.py install for docutils
Running setup.py install for Jinja2
Running setup.py install for Pygments
Running setup.py install for sphinx
no previously-included directories found matching 'doc/_build'
Installing sphinx-build script to /Users/dhellmann/Envs/env3/bin
Installing sphinx-quickstart script to /Users/dhellmann/Envs/env3/bin
Installing sphinx-autogen script to /Users/dhellmann/Envs/env3/bin
Successfully installed docutils Jinja2 Pygments sphinx (env3)$
(venv3)$ which sphinx-build
/Users/dhellmann/Envs/env3/bin/sphinx-build</pre>
</div>
<p>Through a combination of the existing functions defined by the core
package (see <a class="reference internal" href="command_ref.html#command"><em>Command Reference</em></a>), third-party plugins (see
<a class="reference internal" href="plugins.html#plugins"><em>Extending Virtualenvwrapper</em></a>), and user-defined scripts (see <a class="reference internal" href="scripts.html#scripts"><em>Per-User Customization</em></a>)
virtualenvwrapper gives you a wide variety of opportunities to
automate repetitive operations.</p>
</div>
<div class="section" id="details">
<h2>Details<a class="headerlink" href="#details" title="Permalink to this headline">¶</a></h2>
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<div class="section" id="references">
<span id="id1"></span><h2>References<a class="headerlink" href="#references" title="Permalink to this headline">¶</a></h2>
<p><a class="reference external" href="http://pypi.python.org/pypi/virtualenv">virtualenv</a>, from Ian
Bicking, is a pre-requisite to using these extensions.</p>
<p>For more details, refer to the column I wrote for the May 2008 issue
of Python Magazine: <a class="reference external" href="http://www.doughellmann.com/articles/CompletelyDifferent-2008-05-virtualenvwrapper/index.html">virtualenvwrapper | And Now For Something
Completely Different</a>.</p>
<p>Rich Leland has created a short <a class="reference external" href="http://mathematism.com/2009/jul/30/presentation-pip-and-virtualenv/">screencast</a>
showing off the features of virtualenvwrapper.</p>
<p>Manuel Kaufmann has <a class="reference external" href="http://www.doughellmann.com/docs/virtualenvwrapper/es/">translated this documentation into Spanish</a>.</p>
<p>Tetsuya Morimoto has <a class="reference external" href="http://www.doughellmann.com/docs/virtualenvwrapper/ja/">translated this documentation into Japanese</a>.</p>
</div>
<div class="section" id="support">
<h2>Support<a class="headerlink" href="#support" title="Permalink to this headline">¶</a></h2>
<p>Join the <a class="reference external" href="http://groups.google.com/group/virtualenvwrapper/">virtualenvwrapper Google Group</a> to discuss
issues and features.</p>
<p>Report bugs via the <a class="reference external" href="http://bitbucket.org/dhellmann/virtualenvwrapper/">bug tracker on BitBucket</a>.</p>
<div class="section" id="shell-aliases">
<h3>Shell Aliases<a class="headerlink" href="#shell-aliases" title="Permalink to this headline">¶</a></h3>
<p>Since virtualenvwrapper is largely a shell script, it uses shell
commands for a lot of its actions. If your environment makes heavy
use of shell aliases or other customizations, you may encounter
issues. Before reporting bugs in the bug tracker, please test
<em>without</em> your aliases enabled. If you can identify the alias causing
the problem, that will help make virtualenvwrapper more robust.</p>
</div>
</div>
<div class="section" id="license">
<span id="id3"></span><h2>License<a class="headerlink" href="#license" title="Permalink to this headline">¶</a></h2>
<p>Copyright Doug Hellmann, All Rights Reserved</p>
<p>Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Doug Hellmann not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.</p>
<p>DOUG HELLMANN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
EVENT SHALL DOUG HELLMANN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.</p>
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<h3><a href="#">Table Of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">virtualenvwrapper 3.3</a><ul>
<li><a class="reference internal" href="#features">Features</a></li>
<li><a class="reference internal" href="#introduction">Introduction</a></li>
<li><a class="reference internal" href="#details">Details</a><ul>
</ul>
</li>
<li><a class="reference internal" href="#references">References</a></li>
<li><a class="reference internal" href="#support">Support</a><ul>
<li><a class="reference internal" href="#shell-aliases">Shell Aliases</a></li>
</ul>
</li>
<li><a class="reference internal" href="#license">License</a></li>
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