code: def is_not_none(entity, prop, name):
      "bool: True if the value of a property is not None."
      return is_not_empty(entity, prop, name) and name in entity._data and getattr(entity, name) is not Nonf is_not_none(entity, prop, name):
      "bool: True if the value of a property is not None."
      return is_not_empty(entity, prop, name) and name in entity._data and getattr(entity, name) is not None
docs: bool: True if the value of a property is not None.