docs: def ProgChunks(list_, chunksize, nInput=None, **kwargs):
      """
      Yeilds an iterator in chunks and computes progress
      Progress version of ut.ichunks
  
      Args:
          list_ (list):
          chunksize (?):
          nInput (None): (default = None)
  
      Kwargs:
          length, freq
  
      Returns:
          ProgressIter: progiter_
  
      CommandLine:
          python -m utool.util_progress ProgChunks --show
  
      Example:
          >>> # ENABLE_DOCTEST
          >>> from utool.util_progress import *  # NOQA
          >>> import utool as ut
          >>> list_ = range(100)
          >>> chunksize = 10
          >>> nInput = None
          >>> progiter_ = ProgChunks(list_, chunksize, nInput)
          >>> iter_ = iter(progiter_)
          >>> chunk = six.next(iter_)
          >>> assert len(chunk) == 10
          >>> rest = ut.flatten(list(progiter_))
          >>> assert len(rest) == 90
      """
      if nInput is None:
          nInput = len(list_)
      n_chunks = get_num_chunks(nInput, chunksize)
      kwargs['length'] = n_chunks
      if 'freq' not in kwargs:
          kwargs['freq'] = 1
      chunk_iter = util_iter.ichunks(list_, chunksize)
      progiter_ = ProgressIter(chunk_iter, **kwargs)
      return progiter_