class_docstr: A class for arbitrary expressions. 
class_docstr_tok: ["A","class","for","arbitrary","expressions","."]
code: def __eq__(self, other):
      if isinstance(other, ExpressionDomain):
          return True
      else:
          return NotImplemented
  
imports: from sympy.core import sympify, SympifyError
  from sympy.polys.domains.domainelement import DomainElement
  from sympy.polys.domains.characteristiczero import CharacteristicZero
  from sympy.polys.domains.field import Field
  from sympy.polys.domains.simpledomain import SimpleDomain
  from sympy.polys.polyutils import PicklableWithSlots
  from sympy.utilities import public
label_desc: Use image node_id 2 for calling the ExpressionDomain obj's underlying member method code with example usage: obj.__eq__(other) and returns: True, NotImplemented