code: def peek_next(iterable):
      """Peek next element of iterable.
  
      Parameters
      ----------
      iterable
          Iterable to peek the next element from.
  
      Returns
      -------
      next_item
          Element peeked from `iterable`.
      new_iterable
          Iterable behaving like if the original `iterable` was untouched.
      """
      next_item = next(iterable)
      return next_item, itertools.chain([next_item], iterable)
  
imports: import itertools
  import nibabel
label_desc: Use image node_id 2 for calling a global function with example usage: peek_next(iterable) and returns: next_item,  itertools