Iterators can be shared in Python e.g., here's a well-known grouper recipe (traverse `it` iterator in chunks of `N` items each): zip(*[it]*N) Example:

Iterators can be shared in Python e.g., here's a well-known grouper recipe (traverse `it` iterator in chunks of `N` items each): zip(*[it]*N) Example: >>> L = [1, 2, 3, 4] >>> *zip(*[iter(L)]*2), ((1, 2), (3, 4)) Here's the single result of the iter() call is shared. The purpose is to show that iterator can be shared in principle (ignore other aspects of the code).