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Python examples.
deleteExtension([attribute=string], [forceDelete=boolean], [nodeType=string])
Note: Strings representing object names and
arguments must be separated by commas. This is not depicted in the
synopsis.
deleteExtension is NOT undoable, NOT queryable,
and NOT editable.
This command is used to delete an extension attribute from a node
type. The attribute can be specified by using either the long or
short name. Only one extension attribute can be deleted at a time.
Children of a compound attribute cannot be deleted, you must delete
the complete compound attribute. This command has no undo, edit, or
query capabilities.
| int |
Number of nodes with altered data after the delete |
attribute, dependency, graph, delete, extension
addAttr, addExtension, aliasAttr, attributeInfo, connectAttr, deleteAttr, disconnectAttr, getAttr, getClassification, nodeType, objExists, objectType, renameAttr, setAttr
attribute, forceDelete, nodeType
| Long name (short name) |
Argument types |
Properties |
nodeType(nt) |
string |
 |
|
The name of the node type. |
|
attribute(at) |
string |
|
|
Specify either the long or short name of the attribute. |
|
forceDelete(fd) |
boolean |
|
|
If this flag is set and turned ON then data values for the
extension attributes are all deleted without confirmation. If it's
set and turned OFF then any extension attributes that have
non-default values set on any node will remain in place. If this
flag is not set at all then the user will be asked if they wish to
preserve non-default values on this attribute. |
|
| Flag can appear in Create mode of
command |
 Flag can appear in Edit mode of command |
 Flag can appear in Query mode of command |
 Flag can have multiple arguments, passed
either as a tuple or a list. |
import maya.cmds as cmds
cmds.addExtension( nodeType='planet', longName='martians', shortName='mr', attributeType='double' )
cmds.createNode( 'planet', name='jupiter' )
cmds.createNode( 'planet', name='mars' )
cmds.setAttr( 'mars.mr', 35 )
# Delete an extension attribute named mr/martians.
# Only returns 1 since the planet node 'jupiter'
# does not have a non-default value on the extension.
cmds.deleteExtension( nodeType='planet', forceDelete=True, attribute='martians' )
# Return: 1 //
# The attribute is gone since it was forced out
cmds.attributeQuery( type='planet', attribute='mr', query=True, exists=True )
# Return: 0 //
# Re-add and delete the extension again, forcing the
# attribute to remain if non-default values exist.
cmds.addExtension( nodeType='planet', longName='martians', shortName='mr', attributeType='double' )
cmds.setAttr( 'mars.mr', 35 )
cmds.deleteExtension( nodeType='planet', forceDelete=False, attribute='mr' )
# Return: 0 //
# The attribute still exists since it had some non-default values
cmds.attributeQuery( type='planet', attribute='mr', query=True, exists=True )
# Return: 1 //
cmds.attributeQuery( name='jupiter', attribute='mr', query=True, exists=True )
# Return: 1 //