Assert

Fail with a message when the expression is false.

raw .mdPress ? for keys

Node	Assert
Menu	Other › Assert
Names in each format
.oink comp (JSON)	`"type": "OC_N_assert"`
.nk script	`Assert` (how .nk import works)
Python	`nuke.createNode("Assert")`
Assistant (MCP)	`create_node(type="Assert")`
Tab search	`assert`

Assert properties

Inputs and outputs

Port	Name	Type
input 0	Image	image
output 0	Image	image

Knobs

Panel tab Assert, in panel order.

Knob	Label	Type	Default	Range / values	.nk knob	Description
`expression`	expression	float	`1`	0 to 1	`expression`
`message`	message	text			`message`

Other knobs (Python, .nk and the assistant; not on the panel)

Knob	Label	Type	Default	Range / values	.nk knob	Description
`gl_color`	Viewer Controls Color	float ×3	`0, 0, 0`	0 to 1
`postage_stamp_frame`	Static Frame	int	`1`	-2147483648 to 2147483647
`lifetimeStart`	Lifetime Start	int	`0`	-2147483648 to 2147483647
`lifetimeEnd`	Lifetime End	int	`100`	-2147483648 to 2147483647
`useLifetime`	Use Lifetime	boolean	`false`
`cached`	Cached	boolean	`false`
`bookmark`	Bookmark	boolean	`false`
`dope_sheet`	Dope Sheet	boolean	`false`
`clone_group`	Clone Group	string
`link_source`	Link Source	string
`link_overrides`	Link Overrides	string
`split_views`	Split Views	string

CurveTool

Analyse frames into keyed knobs.

BlackOutside

Black outside the bbox instead of repeating its edge.

On this page

Inputs and outputs Knobs Other knobs (Python, .nk and the assistant; not on the panel)