Progress Bars in python

[Hari Sekhon]

Hi,
   I've written a script which backs up a huge bunch of files, but I 
don't want the script to output the file names as it does this as it 
clutters the screen, I only output errors.

So in order to see that the script is working and not stuck, I'd like to 
implement some kind of progress bar or something, perhaps like the 
spinning thing that you often see in linux or freebsd consisting of 
switching / - \ | on the spot to get the appearance of a spinning 
bar.... I can figure out that the spinning bar is done by switching 
these four chars but I don't know how they get each char to replace the 
last one instead of printing them in succession.

Does anybody have any good suggestions about what the best way of doing 
this or any other suggestions for the best ways to show that the script 
is processing...?


Hari