[Tutor] Changing what you've already printed

[Pierre Barbier de Reuille]

Well, it is certainly possible. First, the hard way: you use the ANSI
termainal control commands (you can find the reference on the web, or if
you need it I can send you an HTML file containing them). Second, the
better way: you can use the ncurse library (via the curses Python
module). There you'll get a whole toolkit for TUI (Terminal User
Interface ;) ).

BTW, if you happen to need this while drawing only a single line, the
"\r" char gets you at the beginning of the current line ! So flushing
stdout and then sending the "\r" char will allow you to overwrite the
current line.

Pierre

Ed Singleton a écrit :
> Is it possible (and easy) to change something you've already printed
> rather than print again?
> 
> For example, if I'm making a little noughts and crosses game and I
> print the board:
> 
>    |   |   
>    |   |   
> ___|___|___
>    |   |   
>    |   |   
> ___|___|___
>    |   |   
>    |   |   
>    |   |   
> 
> Then the computer has it's go, and rather than print the board out
> again and have the previous empty board appear higher up, I want to
> just add a X to the board I've already created.
> 
> Eg.
> 
> 
>    |   |   
>    |   |   
> ___|___|___
>    |   |   
>    | X |   
> ___|___|___
>    |   |   
>    |   |   
>    |   |   
> 
> I've programs do this on the command line in Linux, so I assume it
> must be possible.  (I don't mind making my programs Linux only so
> that's not a problem).
> 
> Any clues or pointers to documentation gratefully recieved.
> 
> Thanks
> 
> Ed
> _______________________________________________
> Tutor maillist  -  Tutor at python.org
> http://mail.python.org/mailman/listinfo/tutor
> 

-- 
Pierre Barbier de Reuille

INRA - UMR Cirad/Inra/Cnrs/Univ.MontpellierII AMAP
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