code: def normalizeLinear(value, rangeMin, rangeMax):
      """Linearly normalize value in [rangeMin, rangeMax] to [0, 1], with extrapolation."""
      return (value - rangeMin) / (rangeMax - rangeMin)
  
imports: from fontTools.ttLib import newTable
  from fontTools.ttLib.tables._f_v_a_r import Axis
  from fontTools.pens.areaPen import AreaPen
  from fontTools.pens.basePen import NullPen
  from fontTools.pens.statisticsPen import StatisticsPen
  from fontTools.varLib.models import piecewiseLinearMap, normalizeValue
  from fontTools.misc.cliTools import makeOutputFileName
  import math
  import logging
  from pprint import pformat
label_desc: Use image node_id 1 for calling a global function with example usage: normalizeLinear(value, rangeMin, rangeMax) and returns: unknown