docstr: The Reverse Polish Notation (https://en.wikipedia.org/wiki/Reverse_Polish_notation) representation of the
  feature as a list of token strings. This serves as the symbolic representation of the feature.
docstr_tok: ["The","Reverse","Polish","Notation","(","https",":","\/\/en.wikipedia.org\/wiki\/Reverse_Polish_notation",")","representation","of","the","feature","as","a","list","of","token","strings",".","This","serves","as","the","symbolic","representation","of","the","feature","."]
code: def reverse_polish_notation(self):
      """
      The Reverse Polish Notation (https://en.wikipedia.org/wiki/Reverse_Polish_notation) representation of the
      feature as a list of token strings. This serves as the symbolic representation of the feature.
      """
      return self._rpn
  
file_path: AIX360/aix360/algorithms/rule_induction/trxf/core/feature.py
imports: import numbers
  import tokenize
  from io import BytesIO
  from typing import Dict, Any
label_desc: Use image node_id 3 for calling the Feature obj's underlying member method code with example usage: obj.reverse_polish_notation() and returns: self