Python: access to iterator-object in for-loops

I want to step the loop iterator explicitly inside the loop. Is there a 'nicer' way to do this than:

idx = iter(range(0, 10))

for i in idx:
   print i

   if i == 5:
      print "consuming %i in step %i" % (next(idx), i)

Edit: I wander if there is a way to get access to the loop-ite开发者_如何学编程rator other than defining it explicitly as in my example.

Thanks!

data = list(range(10))

it = iter(data)
for i in it:
   if i==5:
       j = it.next()
       print "Consuming {0},{1}".format(i,j)
   else:
       print i

results in

0
1
2
3
4
Consuming 5,6
7
8
9

You could define a generator to yield elements from the iterator singly or in pairs. This keeps the for-loop nice and simple, while isolating the filtering logic in the generator.

def my_filter(iterable):
    result=[]
    for i in iterable:
        result.append(i)
        if i==5:
            continue
        yield result
        result=[]        

idx = iter(range(0, 10))

for i in my_filter(idx):
    print i