Installing Petrel

Let's set up our Python development environment. We assume here that you have already followed the instructions in Chapter 1, Getting Acquainted with Storm, to install Storm 0.9.3:

1. First, we need to install virtualenv, a tool for managing Python libraries. On Ubuntu, simply run this command:

   sudo apt-get install python-virtualenv

2. Next, we create a Python virtual environment. This provides a way to install Python libraries without requiring root access to the machine and without interfering with the system's Python packages:

   virtualenv petrel

   You will see something like the following output:

   New python executable in petrel/bin/python
   Installing distribute.............................................................................................................................................................................................done

3. Next, run this command to activate the virtual environment. Your shell prompt will change to include the virtualenv name, indicating...