A virtual environment in python isolates a project from other projects.
1. Installs the package virtualenv to create a virtual environment.
sudo pip install virtualenv
2. On windows, open the command prompt as Administrator and type the same command:
pip install virtualenv
3. To activate the virtual environment in linux / Mac:
cd your-virtual-environment-directory
source bin/activate
4. On Windows:
cd your-virtual-environment-directory
Scripts\activate
5. To come out of the virtual environment, just type the following command. It is the same for all the operating systems (Linux/Mac/Windows):
deactivate