nuke.PythonKnob

class nuke.PythonKnob

Bases: String_Knob

A string-valued knob which evaluates its value as a Python expression.

Methods

Class	return: Class name.
clearAnimated	Clear animation for channel 'c'.
clearFlag	Clear flag.
critical	param message: message to put the knob in error, and do a popup.
debug	param message: message to put out to the error console, attached to the knob, if the verbosity level is set high enough.
enabled	return: True if the knob is enabled, False if it's disabled.
error	param message: message to put the knob in error.
fromScript	Initialise from script.
fullyQualifiedName	Returns the fully-qualified name of the knob within the node.
getDerivative	Return derivative at time 't' for channel 'c'.
getFlag	Returns whether the input flag is set.
getIntegral	Return integral at the interval [t1, t2] for channel 'c'.
getKeyIndex	Return keyframe index at time 't' for channel 'c'.
getKeyList	Get all unique keys on the knob.
getKeyTime	Return index of the keyframe at time 't' for channel 'c'.
getNthDerivative	Return nth derivative at time 't' for channel 'c'.
getNumKeys	Return number of keyframes for channel 'c'.
getText	Get the non-evaluated value of this knob - also see value() :param oc: Optional parameter specifying the output context.
getValue	self.value(oc) -> str
getValueAt	Return value at time 't' for channel 'c'.
hasExpression	Return True if animation at index 'index' has an expression.
isAnimated	Return True if channel 'c' is animated.
isKey	Return True if there is a keyframe at the current frame for channel 'c'.
isKeyAt	Return True if there is a keyframe at time 't' for channel 'c'.
label	return: label.
name	return: name.
node	Return the node that this knob belongs to.
removeKey	Remove key for channel 'c'.
removeKeyAt	Remove key at time 't' for channel 'c'.
setAnimated	Set channel 'c' to be animated.
setEnabled	Enable or disable the knob.
setExpression	Set the expression for a knob.
setFlag	Logical OR of the argument and existing knob flags.
setLabel	param s: New label.
setName	param s: New name.
setText	self.setValue(val, view='default') -> None
setTooltip	param s: New tooltip.
setValue	Set value of knob.
setValueAt	Sets the value 'val' at channel 'chan' for time 'time'.
setVisible	Show or hide the knob.
splitView	Split the view away from the current knob value.
toScript	Return the value of the knob in script syntax.
tooltip	return: tooltip.
unsplitView	Unsplit the view so that it shares a value with other views.
value	Get the evaluated value of this knob as a string - also see getText().
visible	return: True if the knob is visible, False if it's hidden.
warning	param message: message to put a warning on the knob.

Class() → Class name.

Returns:

Class name.

clearAnimated()

Clear animation for channel ‘c’. Return True if successful.

clearFlag(f) → None.

Clear flag. :param f: Flag. :return: None.

critical(message) → None.

Parameters:

message – message to put the knob in error, and do a popup.

Returns:

None.

debug(message) → None.

Parameters:

message – message to put out to the error console, attached to the knob, if the verbosity level is set high enough.

Returns:

None.

enabled() → Boolean.

Returns:

True if the knob is enabled, False if it’s disabled.

error(message) → None.

Parameters:

message – message to put the knob in error.

Returns:

None.

fromScript()

Initialise from script.

fullyQualifiedName(channel=- 1) → string

Returns the fully-qualified name of the knob within the node. This can be useful for expression linking.

Parameters:

channel – Optional parameter, specifies the channel number of the sub-knob (for example, channels of 0 and 1 would refer to the x and y of a XY_Knob respectively), leave blank or set to -1 to get the qualified name of the knob only.

Returns:

The string of the qualified knob or sub-knob, which can be used directly in expression links.

getDerivative()

Return derivative at time ‘t’ for channel ‘c’.

getFlag(f) → Bool.

Returns whether the input flag is set. :param f: Flag. :return: True if set, False otherwise.

getIntegral()

Return integral at the interval [t1, t2] for channel ‘c’.

getKeyIndex()

Return keyframe index at time ‘t’ for channel ‘c’.

getKeyList()

Get all unique keys on the knob. Returns list.

getKeyTime()

Return index of the keyframe at time ‘t’ for channel ‘c’.

getNthDerivative()

Return nth derivative at time ‘t’ for channel ‘c’.

getNumKeys()

Return number of keyframes for channel ‘c’.

getText(oc) → string

Get the non-evaluated value of this knob - also see value() :param oc: Optional parameter specifying the output context. Return text associated with knob.

getValue()

self.value(oc) -> str

Get the evaluated value of this knob as a string - also see getText(). :param oc: Optional parameter specifying the output context. :return: String value.

getValueAt()

Return value at time ‘t’ for channel ‘c’.

hasExpression(index=- 1) → bool

Return True if animation at index ‘index’ has an expression. :param index: Optional index parameter. Defaults to -1 if not specified. This can be specified as a keyword parameter if desired. :return: True if has expression, False otherwise.

isAnimated()

Return True if channel ‘c’ is animated.

isKey()

Return True if there is a keyframe at the current frame for channel ‘c’.

isKeyAt()

Return True if there is a keyframe at time ‘t’ for channel ‘c’.

label() → label.

Returns:

label.

name() → name.

Returns:

name.

node() → nuke.Node

Return the node that this knob belongs to. If the node has been cloned, we’ll always return a reference to the original. :return: The node which owns this knob, or None if the knob has no owner yet.

removeKey()

Remove key for channel ‘c’. Return True if successful.

removeKeyAt()

Remove key at time ‘t’ for channel ‘c’. Return True if successful.

setAnimated()

Set channel ‘c’ to be animated.

setEnabled(enabled) → None.

Enable or disable the knob. :param enabled: True to enable the knob, False to disable it.

setExpression(expression, channel=- 1, view=None) → bool

Set the expression for a knob. You can optionally specify a channel to set the expression for.

Parameters:

• expression – The new expression for the knob. This should be a string.

• channel – Optional parameter, specifying the channel to set the expression for. This should be an integer.

• view – Optional view parameter. Without, this command will set the expression for the current view theinterface is displaying. Can be the name of the view or the index.

Returns:

True if successful, False if not.

setFlag(f) → None.

Logical OR of the argument and existing knob flags. :param f: Flag. :return: None.

setLabel(s) → None.

Parameters:

s – New label.

Returns:

None.

setName(s) → None.

Parameters:

s – New name.

Returns:

None.

setText()

self.setValue(val, view=’default’) -> None

Set value of knob. :param val: The new value. :param view: Optional parameter specifying which view to set the value for. If omitted, the value will be set for the default view. :return: None

setTooltip(s) → None.

Parameters:

s – New tooltip.

Returns:

None.

setValue(val, view='default') → None

Set value of knob. :param val: The new value. :param view: Optional parameter specifying which view to set the value for. If omitted, the value will be set for the default view. :return: None

setValueAt(val, time, chan) → bool

Sets the value ‘val’ at channel ‘chan’ for time ‘time’. :return: True if successful, False if not.

setVisible(visible) → None.

Show or hide the knob. :param visible: True to show the knob, False to hide it.

splitView(view) → None.

Split the view away from the current knob value. :param view: Optional view. Default is current view. :return: None.

toScript(quote, context=current) → string.

Return the value of the knob in script syntax. Pass True for quote to return results quoted in {}. Pass None for context to get results for all views and key times (as stored in a .nk file).

tooltip() → tooltip.

Returns:

tooltip.

unsplitView(view) → None.

Unsplit the view so that it shares a value with other views. :param view: Optional view. Default is current view. :return: None.

value(oc) → str

Get the evaluated value of this knob as a string - also see getText(). :param oc: Optional parameter specifying the output context. :return: String value.

visible() → Boolean.

Returns:

True if the knob is visible, False if it’s hidden.

warning(message) → None.

Parameters:

message – message to put a warning on the knob.

Returns:

None.