code: def get_num_chunks(length, chunksize):
      r
      n_chunks = int(math.ceil(length / chunksize))
      return n_chunks
docs: r"""
      Returns the number of chunks that a list will be split into given a
      chunksize.
  
      Args:
          length (int):
          chunksize (int):
  
      Returns:
          int: n_chunks
  
      CommandLine:
          python -m utool.util_progress --exec-get_num_chunks:0
  
      Example0:
          >>> # ENABLE_DOCTEST
          >>> from utool.util_progress import *  # NOQA
          >>> length = 2000
          >>> chunksize = 256
          >>> n_chunks = get_num_chunks(length, chunksize)
          >>> result = ('n_chunks = %s' % (six.text_type(n_chunks),))
          >>> print(result)
          n_chunks = 8