bug#16875: python, comint-mode: Large output makes Emacs freeze

[Andreas Röhler]

On 25.06.2014 03:19, Fabián Ezequiel Gallina wrote:
> This looks related to:
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=13675

To a certain extend.
There some more operations done by comint, which aren't needed when executing 
Python code from source but may slow down it.

Thus solution in python-mode.el is to surpass comint-mode completely and use 
"start-process" and "process-send-string"

See py-fast-process.

> Some ways to attenuate irresponsiveness:
>
> 1. Disable python shell font-locking:
>     (setq python-shell-enable-font-lock nil)
>
> 2. Use Python's pprint to print such expressions, this makes it behave
>     pretty much like iPython:
>
>          >>> import pprint
>          >>> pprint.pprint([[[False] * 200 for i in range(3)] for j in 
> range(200)])

Indeed, "pprint" should solve it already. Maybe make that the default? IMO 
looks better anyway.

Andreas