[Tutor] Scrolling through output in shell
eike.welk at gmx.net
Tue Nov 18 13:53:31 CET 2008
On Monday 17 November 2008, ALAN GAULD wrote:
> > I'm writing a program that reads a text file onto the screen. The
> > text file is too large to read so I want to be able to scroll
> > through it with the arrow key or something like that. I am not
> > using GUI.
You could also output the text, and give it to 'less' to display it.
This is exactly what 'man' does.
You start other programs from python with the 'subprocess' module:
You could also go the classical Unix way and output the text to
standard output (just use print). If necessary you could then give
the output to 'less'. Your program(s) would be used in the following
my_program --foo -a -b -c --be-cool --read this-file.txt | less
Command line options are parsed with the 'optparse' module:
More information about the Tutor