MAYA: Toggle viewport visibility by type

toggleVisibilityByType.py

import maya.cmds as mc

def toggleVisibilityByType(type_):
    options = {type_: True}
    state = mc.modelEditor("modelPanel4", q=True, **options)
    options[type_] = not state
    mc.modelEditor("modelPanel4", e=True, **options)

toggleCurvesVisibility = lambda: toggleVisibilityByType("nurbsCurves")
toggleJointsVisibility = lambda: toggleVisibilityByType("joints")
toggleMeshesVisibility = lambda: toggleVisibilityByType("polymeshes")

# toggleCurvesVisibility()
# toggleJointsVisibility()
# toggleMeshesVisibility()