code: def hlrange(f, p=1):
      r"""Calculate the Range, the difference between High and Low.
  
      Parameters
      ----------
      f : pandas.DataFrame
          Dataframe with columns ``high`` and ``low``.
      p : int
          The period over which the range is calculated.
  
      Returns
      -------
      new_column : pandas.Series (float)
          The array containing the new feature.
  
      """
      new_column = highest(f, "high", p) - lowest(f, "low", p)
      return new_column
  
imports: from alphapy.calendrical import biz_day_month
  from alphapy.calendrical import biz_day_week
  from alphapy.globals import NULLTEXT
  from alphapy.globals import BSEP, PSEP, USEP
  from alphapy.variables import vexec
  import itertools
  import logging
  import math
  import numpy
  import pandas
label_desc: Use image node_id 26 for calling a global function with example usage: hlrange(f, p) and returns: new_column