class_docstr: A class for arbitrary expressions. 
class_docstr_tok: ["A","class","for","arbitrary","expressions","."]
code: def __init__(self):
      pass
  
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 1 to create a new ExpressionDomain object from inherited base classes: Field, CharacteristicZero, SimpleDomain with example: obj = ExpressionDomain()