Step 1: In terminal (console), run the following commands: sudo add-apt-repository ppa:pyp/ppa sudo apt-get update sudo apt-get install pypy pypy-dev Step 2: In terminal (console), type " pypy " and enter. You will see the pypy prompt ( >>>> ). It is different from the python interpreter prompt ( >>> ) >>>> - PyPy interpreter prompt [ 4 greater than symbols] >>> - Python interpreter prompt [ 3 greater than symbols] To check the difference, give exit() command and come out of pypy. Now, in terminal, type " python " and enter. You will see again the python prompt (>>>)