Maya Python script. Hides the transform nodes of types that are not selected

20170731_hideDeselectedNodeType_v01.py

import maya.cmds as mc
def hideDeselectedNodeType(targetNodeType):
    # selectedNodeTransforms will contain transform nodes 
    # of all target node type shapes that are selected
    selectedNodeTransforms = []
    for selNode in mc.ls(sl=True):
        if targetNodeType in mc.nodeType(selNode):
            # selected node is the correct type
            # add the transform node to selectedNodeTransforms
            selectedNodeTransforms.append(mc.listRelatives(selNode, parent=True))
        elif mc.listRelatives(selNode, children=True, type=targetNodeType):
            # selected node is a transform node 
            # with a child node of the correct type
            # add the transform node to selectedNodeTransforms
            selectedNodeTransforms.append(selNode)
        
    if selectedNodeTransforms:
        # only if something is selected, do the hiding thing.
        # if we do not do this check,
        # all transform of targetNodeType will be hidden
        print 'selected objects:',selectedNodeTransforms
        for thisNode in mc.ls(type=targetNodeType): 
            # loops through all target shapes in the scene
            # get the transform node
            thisNodeTransform = mc.listRelatives(thisNode, parent=True)[0]
            if not thisNodeTransform in selectedNodeTransforms:
                print 'hiding', thisNodeTransform
                hide(thisNodeTransform)
    else:
        print 'nothing is selected'
hideDeselectedNodeType('camera')