Problems renaming objects with the same names..

[Seth Lippman]

Hello,
I am trying to do what should be a simple rename, but I am having a
few problems that I think are a bug, but hopefully just me not
realizing an error I am making.

I am writing a script to add a suffix to all meshes : "_geo". It goes
like this:

import maya.cmds as mc
meshs = mc.ls(l=True,type='mesh')
for mesh in meshs:
# get parent transform
transforms = mc.listRelatives(mesh, fullPath=True,parent=True)
transform = transforms[0]
print 'working on ' + transform
# if there is no _geo at the end, put one there
if not transform .endswith("_geo"):
shortName = transform.split("|")
newName = shortName[-1] + "_geo"
print "rename %s to %s " % (transform,newName)
mc.rename(transform,newName)

If I create a new scene, with 2 sphere meshes, it works fine.
If I group each sphere into its own group, and then name the spheres
the same, I get errors.

group1|pSphere
group2|pSsphere

When I run the script I do get

group1|pSphere_geo
group2|pSphere_geo

but I also get this error in the script editor:
working on |group1|pSphere1
rename |group1|pSphere1 to pSphere1_geo
working on |group2|pSphere1
rename |group2|pSphere1 to pSphere1_geo
// Error: Cannot convert data of type int[] to type int. //
// Error: Cannot convert data of type int[] to type int. //
// Error: Cannot convert data of type int[] to type int. //
// Error: Cannot convert data of type int[] to type int. //
// Error: Cannot convert data of type int[] to type int. //
// Error: Cannot convert data of type int[] to type int. //
// Error: Cannot convert data of type int[] to type int. //
// Error: Cannot convert data of type int[] to type int. //
// Error: More than one object matches name: pSphere1_geoShape //
// Error: Cannot convert data of type int[] to type int. //
// Error: More than one object matches name: pSphere1_geoShape //
// Error: Cannot convert data of type int[] to type int. //
// Error: Cannot convert data of type int[] to type int. //
// Error: Cannot convert data of type int[] to type int. //
// Error: Illegal operation "!" on data of type int[]. //
// Error: Illegal operation "!" on data of type int[]. //
// Error: Illegal operation "!" on data of type int[]. //
// Error: Illegal operation "!" on data of type int[]. //
// Error: Cannot convert data of type int[] to type int. //
// Error: Cannot use data of type int[] in a scalar operation. //


Anyone have any idea why? And what other method I could do to rename
the same named objects?

[Richard Kazuo]

Weird. Running your script with grouped pSpheres1 I get no errors and they rename accordingly.
Maybe you got some expression, scriptJob or something running on the background?
Tested in Maya 8.5 by the way...

Richard

[Seth Lippman]

I had another friend test it too.. Looks like its local to my machine
config. Will fire up a vanilla maya session and double check. Thanks.

[Seth Lippman]

Yep, false alarm. Deleting all prefs and envs this code works fine...
I'll will find the offending code / scriptJob and post it if its
anything interesting.

But, it the spirit of discussing Python in Maya, is this the most
efficent way to be renaming things? Is there a better way?

It seems simple enough as it is now..

[Ofer Koren]

Give pymel a shot:

import pymel as pm
for mesh in pm.ls(type='mesh'):
    p = mesh.getParent()
    if p and not p.endswith("_geooo"):
        print 'renaming %s' % p
        p.rename("%s_geooo" % p.name())

It's not doing things much differently from your version really, just a bit more concise, allowing you to avoid all the long-name/short-name issues that come up in maya scripting.

--


- Ofer
www.mrbroken.com

[Seth Lippman]

Nice, I will.