class_docstr: A counter to count ratio of something. 
docstr: Returns:
      int: the total
code: def count(self):
      """
      Returns:
          int: the total
      """
      return self._cnt
  
imports: import numpy
label_desc: Use image node_id 6 for calling the RatioCounter obj's underlying member method code with example usage: obj.count() and returns: self