Hello, I try :

a = hou.parmTuple(path_diffuse + ‘/diff_color’)
a.set((0.8, 0.8, 0.8))

ok It works.

Liste =
a = hou.parmTuple(path_diffuse + ‘/diff_color’)
a.set(Liste)

It don't works. I have tried different things, but I always gets

File “CPROGRA~1/Side Effects Software/Houdini 15.0.329/houdini/python2.7libs\hou.py”, line 25122, in set
return _hou.ParmTuple_set(*args)
InvalidSize: Invalid size.

Thanks for your help….

You still need the inner parenthesis, right?


a.set((Liste))

or

a.set((Liste,Liste,Liste))


Your list should not be a string either just use float numbers.

Liste =

The issue is that the list you are trying to set is really a single element list that contains a string. Remove those quotes and it will work.

Thanks for your replies.

Then, create my list manually without quote ok it works now.
But I want to do the same in a way procedural from a text file.

source_file :

0.8, 0.8, 0.8
0.8, 0.8, 0.8
0.9294118, 0.09019608, 0
0.8, 0.8, 0.8

fichier = open(source_file , ‘r’)
for ligne in fichier:
line = ligne.strip()
Liste.append(line)
fichier.close()
a = hou.parmTuple(path_diffuse + ‘/diff_color’)
a.set(Liste)

>>> print Liste

>>>

I cannot edit my list by removing the quotes (in a way procedural) while keeping tuples for the changes in my hou.parmTuple()… :?

In that case you can simply evaluate the string values to turn them into valid Python numerical types and set those. If you run something like eval('0.8, 0.8, 0.8') that should give you a 3 element tuple of float values which you can use to set.

Thanks for your help. It works…

I can retrieve each tuple of my list…

>>>Liste =
>>> a = hou.parmTuple(path_diffuse + ‘/diff_color’)
>>> a.set(eval(Liste))
>>> a.set(eval(Liste))
>>> a.set(eval(Liste))
>>> a.set(eval(Liste))

I was also facing the same problem but this post helped me out at some point. thanku sir ..