class_docstr: A class that creates a grid of Axes. In matplotlib, the axes
  location (and size) is specified in the normalized figure
  coordinates. This may not be ideal for images that needs to be
  displayed with a given aspect ratio.  For example, displaying
  images of a same size with some fixed padding between them cannot
  be easily done in matplotlib. AxesGrid is used in such case.
code: def _get_col_row(self, n):
      if self._direction == "column":
          col, row = divmod(n, self._nrows)
      else:
          row, col = divmod(n, self._ncols)
  
      return col, row
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  import matplotlib.axes
  import matplotlib.cbook
  import matplotlib.ticker
  from matplotlib.gridspec import SubplotSpec
  from .axes_divider import Size, SubplotDivider, LocatableAxes, Divider
  from .colorbar import Colorbar
label_desc: Use image node_id 4 for calling the Grid obj's underlying member method code with example usage: obj._get_col_row(n) and returns: col,  row