Pythonic selection of all vralightmesh nodes

[re:FORM]

I'm trying to set parameters on multiple VRayLightMesh objects programatically, but I can't seem to get the code right (I am a bit of a maya newbie)

VRMLgts = cmds.ls(type = "VRayLightMesh")
for VRMLgt in VRMLgts:
try :
print VRMLgt.subdivs
except :
print "not working"
try :
lgt = cmds.listRelatives(VRMLgt, p=1)[0]
print lgt.subdivs
except :
print "not working either"

Any ideas where I'm going wrong? I have multiple objects with vrayLightMesh nodes ,but I can't seem to access them in the way I would expect in python.

Thanks for any suggestions.
p.

[t.petrov]

I think you have to use the getAttr and setAttr methods/commands.
Search for tutorials about setting/getting attributes or inspect the docs.

VRayLightMesh behaves as a standard Maya node and thus if you know how to set some attribute of another node you'll be able to do it for VRayLightMesh, too.

[bigbossfr]

Set 8 on subdivs of all VRayLightMesh :

[cmds.setAttr('%s.subdivs', 8) % x for x in cmds.ls(type = "VRayLightMesh")]

Print :

print [cmds.getAttr('%s.subdivs') % x for x in cmds.ls(type = "VRayLightMesh")]

[re:FORM]

Hah, nice. Some ninja pythoning right there.
Thanks for that.