two generators working in tandem

[john peter]

I'd like to write two generators: one is a min to max sequence number generator that
  rolls over to min again once the max is reached. the other is a generator that cycles
  through N (say, 12) labels. currently, i'm using these generators in nested loops like
  this:
   
  seq_numbers = genSeqNum(min,max)
  for label in genLabel():
     for some_date in genDate(init):
        for i in xrange(0, LIMIT):
           print label, some_date, i, seq_numbers.next()
   
  The problem I'm trying to solve is this:
  when the seq_numbers generator rolls over, the label generator must be advanced
  to the next one "in tandem". does anyone has any suggestion? thanks for any hepl!

		
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