Upgrading Portable Python and virtualenv

Steps to upgrade your virtualenvs when you upgrade portable python (and perhaps any other python).

1. Add this portable python to your path variable. I am using msys to give me a linux like environment so I do a:

PYTHON_HOME="/PortableApps/PortablePython2.7.6.1/App"

export PATH="$PYTHON_HOME:$PYTHON_HOME/Scripts:$PATH"

1. I like pip in the environment so get pip:
• easy_install pip
2. Get virtualenv for this portable python:
• pip install virtualenv
3. Now redo the virtual env with this virtualenv in the new python. Note "--system-site-packages" is optional and based on what you used previously to build this environment.
• virtualenv --system-site-packages <path to existing virtual environment>