Python debugger (pdb) stopped handlying up/down arrows, shows ^[[A instead
keyboard, pdb, python, readline
Solution
I found this problem exists when outputting to both console and file using `python file.py 2>&1 | tee output.txt`:
How to redirect stdout to both file and console with scripting?
After removing `2>&1 | tee output.txt`, this problem (up arrow becomes `^[[A` in pdb) disappear.
Problem
I am using python 2.6 in a virtualenv on an Ubuntu Linux 11.04 (natty) machine. I have this code in my (django) python code: ``` import pdb ; pdb.set_trace() ``` in order to launch the python debugger (pdb). Up until today, this worked fine. But now when the pdb starts, it works for debugging and running and breakpoints etc, but when I press the up arrow to show the previous command it prints `^[[A` instead an doesn't go up. When I type something and press Home, it prints `^[OH` instead of moving the cursor. I can use up/home/etc. fine in the bash terminal which launches my python django unittests (which has the pdb call). What's going on? How do I fix my pdb? What's wrong with my readline?