[Urwid] An urwid bug with the alternate screen

Kevin Tran hekevintran at gmail.com
Tue Jul 10 18:21:24 EDT 2012

I am having problems with using the alternate screen in a tmux session. I am using pudb which uses urwid.

I am running:

When I use pudb in a tmux session, the python shell shows at the bottom when it should clear the screen.

Outside of a tmux session: 

Inside a tmux session: 

In my tmux config I have:
set-window-option -g alternate-screen on

The author of pudb said:
> Looks like an urwid bug. If you change
> from urwid.raw_display import Screen
> to 
> from urwid.curses_display import Screen
> the alternate screen starts working, but everything else looks bad. I'd
> be happy if you could take this issue to Ian Ward, author of urwid.
> Andreas
From: http://lists.tiker.net/pipermail/pudb/2012-June/thread.html

Do you have an idea of why this is happening?

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