code: def szipper(inbox, s=None):
      
      #TODO: test szipper
      return zip(*[input_ for i, input_ in enumerate(inbox) if i in s])
docs: Zips inputs from inbox with indicies in "s". By default zips the whole 
      inbox (all indices).
  
      Arguments:
  
        - s(sequence) [default: ``None``]