1. Add a line like ``export WORKON_HOME=$HOME/.virtualenvs`` to your .bashrc.
2. Add a line like ``source /path/to/this/file/virtualenvwrapper_bashrc`` to your .bashrc.
3. Run: ``source ~/.bashrc``
4. Run: ``workon``
5. A list of environments, empty, is printed.
6. Run: ``mkvirtualenv temp``
7. Run: ``workon``
8. A new environment, ``temp`` is created and activated.
9. This time, the ``temp`` environment is included.
Sometimes it is desirable to share installed packages that are not in the system ``site-pacakges`` directory and which you do not want to install in each virtualenv. In this case, you *could* symlink the source into the environment ``site-packages`` directory, but it is also easy to add extra directories to the PYTHONPATH by including them in a .pth file inside ``site-packages`` using ``add2virtualenv``.
1. Check out the source for a big project, such as Django.
2. Run: ``add2virtualenv path_to_source``.
3. Run: ``add2virtualenv``.
4. A usage message and list of current "extra" paths is printed.
virtualenvwrapper adds several hook points you can use to change your settings when creating,
deleting, or moving between environments. They are either *sourced* (allowing them to modify
your shell environment) or run as an external program at the appropriate trigger time.
The ``postactivate`` script is sourced after the new environment is enabled. ``$VIRTUAL_ENV``
refers to the new environment at the time the script runs.
This example script for the PyMOTW environment changes the current working directory and the
PATH variable to refer to the source tree containing the PyMOTW source.
The ``predeactivate`` script is source before the current environment is deactivated, and can
be used to disable or clear settings in your environment. ``$VIRTUAL_ENV`` refers to the old
environment at the time the script runs.
The global ``postactivate`` script is sourced after the new environment is enabled and the new
environment's postactivate is sourced (if it exists). ``$VIRTUAL_ENV`` refers to the new
environment at the time the script runs.
This example script adds a space between the virtual environment name and your old PS1 by making
use of ``_OLD_VIRTUAL_PS1``.
PS1="(`basename \"$VIRTUAL_ENV\"`) $_OLD_VIRTUAL_PS1"
The ``premkvirtualenv`` script is run as an external program after the virtual environment is
created but before the current environment is switched to point to the new env. The current
working directory for the script is ``$WORKON_HOME`` and the name of the new environment is
passed as an argument to the script.
The ``postmkvirtualenv`` script is sourced after the new environment is created and
The ``prermvirtualenv`` script is run as an external program before the environment is removed. The full path to the environment directory is passed as an argument to the script.
The ``postrmvirtualenv`` script is run as an external program after the environment is removed. The full path to the environment directory is passed as an argument to the script.
The function ``add2virtualenv`` adds the specified directories to the Python path for the active virtualenv. The directory names passed as argument are added to a path file named ``virtualenv_path_extensions.pth`` inside the virtualenv's site-packages directory. If this file does not exist, it will be created first.
For more details, refer to the column I wrote for the May 2008 issue of Python Magazine: `virtualenvwrapper | And Now For Something Completely Different <http://www.doughellmann.com/articles/CompletelyDifferent-2008-05-virtualenvwrapper/index.html>`_.
- Optimize virtualenvwrapper_show_workon_options.
- Add global postactivate hook.
- Pull in fix for colorized ls from Jeff Forcier (b42a25f7b74a).
- Add more hooks for operations to run before and after creating or deleting environments based on changes from Chris Hasenpflug.
- Corrected a problem with change to mkvirtualenv that lead to release 1.8 by using an alternate fix proposed by James in comments on release 1.4.
- Fix for processing the argument list in mkvirtualenv from jorgevargas (BitBucket issue #1)
- Move to bitbucket.org for hosting
- clean up TODO list and svn keywords
- add license section below
- More zsh support (fixes to rmvirtualenv) from Byron Clark.
- Add completion support for zsh, courtesy of Ted Leung.
- Fix some issues with spaces in directory or env names. They still don't really work with virtualenv, though.
- Added documentation for the postactivate and predeactivate scripts.
- Includes a new .pth management function based on work contributed by James Bennett and Jannis Leidel.
- Includes a fix for a nasty bug in rmvirtualenv identified by John Shimek.
Copyright Doug Hellmann, All Rights Reserved
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granted, provided that the above copyright notice appear in all
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Hellmann not be used in advertising or publicity pertaining to
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