Method info

traitlets/traitlets.py:2161–2170

Returns a description of the trait.

(self)

        self.error(obj, value)

    def info(self) -> str:
        """Returns a description of the trait."""
        if isinstance(self.klass, str):
            klass = self.klass
        else:
            klass = self.klass.__module__ + "." + self.klass.__name__
        result = "a subclass of '%s'" % klass
        if self.allow_none:
            return result + " or None"
        return result

    def instance_init(self, obj: t.Any) -> None:
        # we can't do this in subclass_init because that