for: else: - any practical uses for the else clause?

[MonkeeSage]

BJörn Lindqvist wrote:
> The code that you write in the positions A and B really are misplaced.
> They arent part of the iteration of list. The two tasks, find item and
> do something with item should be separated.

I think it is useful to have them joined. Consider a contrived example:

for i in (1,2,3,0,5,6):
  try:
    print 10 / i
  except:
    print 'Error in data'
    break
else:
  print 'Data processed cleanly'

Yes, you could use a flag variable instead:

done = 1
for i in (1,2,3,0,5,6):
  try:
    print 10 / i
  except:
    print 'Error in data'
    done = 0
    break
if done:
  print 'Data processed cleanly'

...but that is not as clean imo.

Regards,
Jordan