parameters: (cls, name, value)
docstring: Add an attribute to the class, clearing `_unbound_fields` if needed.
docstring_summary: Add an attribute to the class, clearing `_unbound_fields` if needed.
docstring_tokens: Add an attribute to the class clearing _unbound_fields if needed .
function: def __setattr__(cls, name, value):
          """
          Add an attribute to the class, clearing `_unbound_fields` if needed.
          """
          if not name.startswith('_') and hasattr(value, '_formfield'):
              cls._unbound_fields = None
          type.__setattr__(cls, name, value)
function_tokens: def __setattr__ ( cls , name , value ) : if not name . startswith ( '_' ) and hasattr ( value , '_formfield' ) : cls . _unbound_fields = None type . __setattr__ ( cls , name , value )