How to run ipython with pypy?

Question

How do I use ipython on top of a pypy interpreter rather than a cpython interpreter? ipython website just says it works, but is scant on the details of how to do it.

Answer 1

You can create a PyPy virtualenv :

virtualenv -p /path/to/pypy <venv_dir>

Activate the virtualenv

source <venv_dir>/bin/activate

and install ipython

pip install ipython

• domenukk: If someone wants to get this working on pypy for python 2, you need pip install ipython==1.2.1

Answer 2

This worked for me, after pypy is installed:

pypy -m easy_install ipython

Then it gets installed in the same directory as pypy, so if pypy is at this location:

which pypy
/usr/local/bin/pypy

Then ipython will be there

/usr/local/bin/ipython

You can set up an alias in your bash startup script:

alias pypython="/usr/local/share/pypy/ipython"

Answer 3

• install setuptools to pypy
• install pip with setuptools to pypy

do

pypy\bin\pip install ipython

Answer 4

The "straight forward" way is:

1. Install pypy3
2. pypy3 -m pip install ipython
3. pypy3 -m IPython

• wim: pypy doesn't come with a pip installation by default (although, these days ensurepip could be used to bootstrap one).
• numbermaniac: Depends how you install it. For example if you install pypy through Homebrew (on macOS), then it does comes with pip pre-installed.