code: def manhattan(h1, h2):  # # 7 us @array, 31 us @list \w 100 bins
      r"""
      Equal to Minowski distance with :math:`p=1`.
  
      See also
      --------
      minowski
      """
      h1, h2 = __prepare_histogram(h1, h2)
      return scipy.sum(scipy.absolute(h1 - h2))
  
imports: import math
  import scipy
label_desc: Use image node_id 4 for calling a global function with example usage: manhattan(h1, h2) and returns: scipy