PEP 284, Integer for-loops (code bash?)

[David Eppstein]

In article <mailman.1015594994.21811.python-list at python.org>,
 Laura Creighton <lac at strakt.com> wrote:

> By the way, for your students, what keeps you from doing this:
...
>  for index, value in zip(_indices, someList):
>           whatever_you_want()

I find "for i in range(len(list))" adequate for looping over indices of 
a list.

But much of the time, when I want to loop over integers, it's part of 
some dynamic program where the integers I want to loop over aren't the 
index set of any list, are in backwards order, aren't half-open 
intervals, etc., and the range syntax becomes more cumbersome.