bundles / traitlets latest / traitlets / traitlets / Instance

class

`traitlets.traitlets:Instance`

source: /traitlets/traitlets.py:2219

Signature

class Instance(klass: str | type[T] | None = None, args: tuple[t.Any, ...] | None = None, kw: dict[str, t.Any] | None = None, allow_none: bool = False, read_only: bool | None = None, help: str | None = None, **kwargs: t.Any) → None

Members

Summary

A trait whose value must be an instance of a specified class.

Extended Summary

The value can also be an instance of a subclass of the specified class.

Subclasses can declare default classes by overriding the klass attribute

Aliases

traitlets.Instance