Method has_trait

traitlets/traitlets.py:1832–1834

Returns True if the object has a trait with the specified name.

(self, name: str)

        }

    def has_trait(self, name: str) -> bool:
        """Returns True if the object has a trait with the specified name."""
        return name in self._traits

    def trait_has_value(self, name: str) -> bool:
        """Returns True if the specified trait has a value.