class_docstr: A simple Monomial class to
  record the details of all variables
  that a typical monomial is composed of.
class_docstr_tok: ["A","simple","Monomial","class","to","record","the","details","of","all","variables","that","a","typical","monomial","is","composed","of","."]
docstr: Get the set of all variables
  present in the monomial.
docstr_tok: ["Get","the","set","of","all","variables","present","in","the","monomial","."]
code: def all_variables(self) -> Set:
      """
      Get the set of all variables
      present in the monomial.
      """
      return set(sorted(self.variables.keys()))
  
imports: from fractions import Fraction
  from typing import Dict, Union, Set, Iterable
  from numbers import Rational
  from functools import reduce
label_desc: Use image node_id 14 for calling the Monomial obj's underlying member method code with example usage: obj.all_variables() and returns: set