Working with a virtual environment

It is very likely that you will develop multiple Django projects on your computer. Some modules, such as Python Imaging Library (or Pillow) and MySQLdb, can be installed once and then shared for all projects. Other modules, such as Django, third-party Python libraries, and Django apps, will need to be kept isolated from each other. The virtualenv tool is a utility that separates all of the Python projects in their own realms. In this recipe, we will see how to use it.