how best to iterate i times ?

[Peter Otten]

Randall Smith wrote:

> So, question is:  What is the efficient, elegant, pythonic way to
> iterate with integers?

The standard way is to use xrange() instead of range(). If you are
interested only in the repetition, not the numbers, you can also use
itertools.repeat(). Let's see what is fastest:

(1)
for i in xrange(N):
    pass

(2)
for _ in repeat(None, N):
    pass

$ timeit.py "for i in xrange(100000): pass"
100 loops, best of 3: 1.09e+04 usec per loop
$ timeit.py -s"from itertools import repeat" "for i in repeat(None, 100000):
pass"
100 loops, best of 3: 5.73e+03 usec per loop


Peter