How can I set environment variable WORKON_HOME for virtualenvwrapper-win

Question

I am trying to setup virtualenvwrapper-win on a usb drive as part of a python development environment. In https://github.com/davidmarble/virtualenvwrapper-win it states:

Optional: Add an environment variable WORKON_HOME to specify the path to store environments. By default, this is %USERPROFILE%\Envs.

but doesn't explain how to do this. Could someone help with this?

My system python is at:

/f/python27/python

Answer 1

AS lguananut said, you are asking how to set an environment variable. Take Win7 as example,

1. execute command "sysdm.cpl"
2. Go to Advanced tab, open "Enviroment Variables..."
3. New a system variable
4. In pop window, set variable name = WORKON_HOME, value = [your virtual environments root]

relaunch one command prompt, all commands like mkvirtualenv, workon will works.

Answer 2

If you prefer Powershell like me, you could also try the following code.

[Environment]::SetEnvironmentVariable("WORKON_HOME", "C:\Venv", "User")
[Environment]::SetEnvironmentVariable("PROJECT_HOME", "C:\Project", "User")

It will create two environment variables for your current user:

• WORKON_HOME
• PROJECT_HOME

Paste the sample code in PowerShell window:

[Environment]::SetEnvironmentVariable("WORKON_HOME", "<Your-Virtual-Environment-Root>", "User")
[Environment]::SetEnvironmentVariable("PROJECT_HOME", "<Your-Project-Root>", "User")

It will populate the variables like

Hope it helps.