use generate as simple pager

pager_generator.py

import cPickle as pickle

class Pager(object):

  def __init__(self, sequence, start_index=0):
    self.sequence = sequence
    self.start_index = start_index

  def __iter__(self):
    end_index = len(self.sequence)
    while self.start_index < end_index:
      self.start_index += 1
      yield self.sequence[self.start_index]

  def __getstate__(self):
    return self.sequence, self.start_index

  def __setstate__(self, state):
    self.sequence, self.start_index = state


def main():

  pager = Pager(range(100))

  iter = pager.__iter__()
  print next(iter)

  pickled_iter = pickle.dumps(pager)
  pager = pickle.loads(pickled_iter)

  iter = pager.__iter__()
  print next(iter)


if __name__ == '__main__':

  main()