How can I install two different ipython versions

Question

I would like to install two different ipython versions on a single computer. I am currently using ipython 1.1 and I cloned ipython 2.0 Dev version. So as mentioned, I tried to launch python -m IPython notebook from Ipython 2.0 folder but I cannot import ipython 2 specific module like widget .

Answer 1

I believe the easiest way to do this, is to use virtualenvironments. Check out invewrapper or its predecessor virtualenv .

Once you have either installed, make two virtualenvironments ( pew-new old_ipython and pew-new new_ipython ), activate each (creating one will activate it automatically) and install your desired version of IPython.