class_docstr: Helper class for a fixed axis.
code: def update_lim(self, axes):
      self.grid_helper.update_lim(axes)
  
      if self.nth_coord == 0:
          xy1, xy2 = axes.get_ylim()
      else:
          xy1, xy2 = axes.get_xlim()
  
      if xy1 > xy2:
          self._limits_inverted = True
      else:
          self._limits_inverted = False
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  from six.moves import zip
  from itertools import chain
  from .grid_finder import GridFinder
  from .axislines import AxisArtistHelper, GridHelperBase
  from .axis_artist import AxisArtist
  from matplotlib.transforms import Affine2D, IdentityTransform
  import numpy
  from matplotlib.path import Path
label_desc: Use image node_id 2 for calling the FixedAxisArtistHelper obj's underlying member method code with example usage: obj.update_lim(axes) without return types