Take the following steps to setup development with Virtualenv:

1. Start a terminal (a shell). You'll perform all subsequent steps in this shell.

2. Clone the repo:

   $ git clone https://github.com/goodow/realtime-python.git
   $ cd realtime-python/ 

3. Install pip and Virtualenv by issuing the following commands:

   $ sudo easy_install pip
   $ pip install --upgrade virtualenv 

4. Create a Virtualenv environment:

   $ virtualenv --system-site-packages -p python3 .  # require Python 3.n
   

5. Activate the Virtualenv environment:

   $ source ./bin/activate 

   The preceding source command should change your prompt to the following:

    (realtime-python)$ 

6. Ensure pip ≥8.1 is installed:

    (realtime-python)$ easy_install -U pip

7. Install all the required packages into the active Virtualenv environment:

    (realtime-python)$ pip3 install --upgrade -r requirements.txt