ipython up and down arrow strange behaviour
ipython, macos, python
Solution
Make sure you installed readline before ipython.
`sudo pip uninstall ipython`
`sudo pip install readline ipython`
(I know this question is a few months old, but for future reference)
Problem
In my installation of ipython I have this strange problem where I cannot reliably move through command history with up and down arrows... a lot of the time it just doesn't work (nothing happens on the key press). Also sometimes writing normal characters at the end of the command just doesn't work. My system: Mac OSX Lion I have readline installed... thank you for the help! david