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Error when getting blend shape target weights using component slices #306

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
When calling getAttr with a targetWeights attribute 
(blendShape.inputTarget.inputTargetGroup.targetWeights) and a slice of vertices 
I get a TypeError.

Maya 2013 SP2. Windows 7 Enterprise SP1 64bit. PyMEL version is whatever ships 
with 2013 SP2 (1.0.4?)

Results:
Expecting:
[1.0, 1.0]

What I get:
# Error: unhashable type: 'list'
# Traceback (most recent call last):
#   File "<maya console>", line 1, in <module>
#   File "C:\Program 
Files\Autodesk\Maya2013\Python\lib\site-packages\pymel\core\general.py", line 
291, in getAttr
#     }[cmds.getAttr( attr, type=1)](res)
# TypeError: unhashable type: 'list' # 

Code to reproduce:
import pymel.core as pm
pm.newFile(force=True)
base = pm.polyCube(ch=False)
tgt = pm.polyCube(ch=False)
blendShape = pm.blendShape(tgt, base)[0]
print pm.getAttr('%s.it[0].itg[0].tw[0:1]' % blendShape)

maya.cmds does not error when running the same command.

Original issue reported on code.google.com by Jesse.Ca...@gmail.com on 30 Jul 2013 at 9:02