old_contents: def setup_text_plots(fontsize=8, usetex=True):
      """
      This function adjusts matplotlib settings so that all figures in the
      textbook have a uniform format and look.
      """
      import matplotlib
      matplotlib.rc('legend', fontsize=fontsize, handlelength=3)
      matplotlib.rc('axes', titlesize=fontsize)
      matplotlib.rc('axes', labelsize=fontsize)
      matplotlib.rc('xtick', labelsize=fontsize)
      matplotlib.rc('ytick', labelsize=fontsize)
      matplotlib.rc('text', usetex=usetex)
      matplotlib.rc('font', size=fontsize, family='serif',
                    style='normal', variant='normal',
                    stretch='normal', weight='normal')
  
new_contents: def setup_text_plots(fontsize=8, usetex=True):
      """
      This function adjusts matplotlib settings so that all figures in the
      textbook have a uniform format and look.
      """
      import matplotlib
      from distutils.version import LooseVersion
      matplotlib.rc('legend', fontsize=fontsize, handlelength=3)
      matplotlib.rc('axes', titlesize=fontsize)
      matplotlib.rc('axes', labelsize=fontsize)
      matplotlib.rc('xtick', labelsize=fontsize)
      matplotlib.rc('ytick', labelsize=fontsize)
      matplotlib.rc('text', usetex=usetex)
      matplotlib.rc('font', size=fontsize, family='serif',
                    style='normal', variant='normal',
                    stretch='normal', weight='normal')
      matplotlib.rc('patch', force_edgecolor=True)
      if LooseVersion(matplotlib.__version__) < LooseVersion("3.1"):
          matplotlib.rc('_internal', classic_mode=True)
      else:
          # New in mpl 3.1
          matplotlib.rc('scatter.edgecolors', 'b')
      matplotlib.rc('grid', linestyle=':')
  
subject: Update the mpl rcparams for mpl 2.0+