问题
If I have run a long line in IPython, and try and recall it (using the up-arrow) or backspace beyond the start of the current line, it displays incorrectly (all smushed into one line)
For example, in the following session I wrote a long line [1], entered a somewhat-blank line [2], then up-arrowed twice to get the print statement on line [3], and the following happened:
Happens in both iTerm and Terminal.app.. I had a similar problem with regular terminal sessions, which was fixed by properly terminating colour codes, but I'm not sure how to fix it with IPython
回答1:
Aha! I had an old version of the Python readline module - installing the latest from http://ipython.scipy.org/dist/ and it works perfectly!
sudo easy_install http://ipython.scipy.org/dist/readline-2.5.1-py2.5-macosx-10.5-i386.egg
回答2:
Got this problem on Snow Leopard. Installing a new version of readline from http://pypi.python.org/pypi/readline/ fixes it:
sudo easy_install http://pypi.python.org/packages/2.6/r/readline/readline-2.6.4-py2.6-macosx-10.6-universal.egg
回答3:
I can't reproduce it (up-arrow works for long lines in ipython):
来源：https://stackoverflow.com/questions/670764/line-wrapping-problems-with-ipython-shell