removeAttribute

removeAttribute.py

import maya.api.OpenMaya as om2

selList = om2.MGlobal.getActiveSelectionList()
mObject = selList.getDependNode(0)
fnDepNode = om2.MFnDependencyNode(mObject)

floatLongName = "floatLongName"
dstAttrPlug = fnDepNode.findPlug(floatLongName, False)

if fnDepNode.hasAttribute(floatLongName):
	fnDepNode.removeAttribute(dstAttrPlug.attribute())

	# MDGModifier を使う方法もあります
	# dgModifier = om2.MDGModifier()
	# dgModifier.removeAttribute(fnDepNode.object(), dstAttrPlug.attribute())
	# dgModifier.doIt()