old_contents: #  _*_coding:utf-8 _*_
  """Create a heap data structure."""
  from __future__ import division
  import math
  
  
  class Heap(object):
      """Create a heap data structure."""
  
      def __init__(self):
          """Init method for Heap class."""
          self.high_low = []
  
new_contents: #  _*_coding:utf-8 _*_
  """Create a heap data structure."""
  from __future__ import division
  import math
  
  
  class Heap(object):
      """Create class Heap."""
  
      def __init__(self):
          """Initilializating for Heap class."""
          self.high_low = []
  
      def get_parent(self, index):
          """Index number of Node's parent."""
          return (index - 1) // (2)
  
      def get_left(self, index):
          """Left child."""
          return 2 * index + 1
  
      def get_right(self, index):
          """Right child."""
          return 2 * index + 2
  
subject: create get parent, left, right, alot a research in doc to do this with help