topic Re: Rename object using for loop in Maya Programming Forum

Rename object using for loop

danispag — Sun, 23 Aug 2020 07:57:10 GMT

I have a list of objects which I want to rename. But I want each object to be renamed differently. Image attached as an example.

This is what I did so far but its not working as I want.

Can anyone help me please

Thanks in advance 🙂

lGrpSel = cmds.ls(leftFingers)

chunk_size = 3

leftChunks = [lGrpSel[i:i + chunk_size] for i in range(0, len(lGrpSel), chunk_size)]

side = 'left'
thumb = 'Thumb'
pointer = 'Pointer'
middle = 'Middle'
ring = 'Ring'
pinky = 'Pinky'
order = ['Base', '01', '02']
objType = 'CTRL'
spacer = '_'

for f in leftChunks:
for i in range(0, len(f), 1):
cmds.rename(f[i], side + thumb + spacer + order[i] + spacer + objType)
cmds.rename(f[i], side + pointer + spacer + order[i] + spacer + objType)
cmds.rename(f[i], side + middle + spacer + order[i] + spacer + objType)
cmds.rename(f[i], side + ring + spacer + order[i] + spacer + objType)
cmds.rename(f[i], side + pinky + spacer + order[i] + spacer + objType)

Re: Rename object using for loop

lee.dunham — Mon, 24 Aug 2020 14:29:17 GMT

There are many, many ways in which you could achieve this - from almost hardcoded, to something potentially illegible, so I would say it would actually be a great learning exercise.

# Provide variables for grouped naming segments side = 'left' descriptors = [ 'Thumb', 'Pointer', 'Middle', 'Ring', 'Pinky', ] identifiers = [ '_base_CTRL', '_01_CTRL', '_02_CTRL', ] # Get the selection and break it into groups of 3 selection = mc.ls(sl=True) sel_chunk = [ selection[i:i + 3] for i in range(0, len(selection), 3) ] # Iterate the selection groups and descriptor for that group ('Thumb') for sel_grp, desc in zip(sel_chunk, descriptors): # Iterate each item in the selection group along with an index for i, name in enumerate(sel_grp): # Construct the name. # The modulus operator is very convenient (not to be confused with old-style string formatting). new_name = side + desc + identifiers[i % 3]

Python enumeration:

https://book.pythontips.com/en/latest/enumerate.html

Python modulus operator:

https://www.freecodecamp.org/news/the-python-modulo-operator-what-does-the-symbol-mean-in-python-solved/

There are many other ways to do this, but this seemed to closer to the direction you were heading.

Re: Rename object using for loop

danielblaze — Mon, 24 Aug 2020 15:14:14 GMT

Amazing that worked perfectly :). Thank you so much

Re: Rename object using for loop

lee.dunham — Mon, 24 Aug 2020 15:27:55 GMT

No problem