code: def eq(a, b):
      if isinstance(a, sympy.Expr) or isinstance(b, sympy.Expr):
          return sympy.Eq(a, b)
      return a == b
  
imports: import math
  import sympy
  import torch
label_desc: Use image node_id 4 for calling the ReferenceAnalysis obj's underlying member method code with example usage: obj.eq(a, b) and returns: unknown, sympy