Yes, I tried as soon as nodes came out, no cut… what???
I think you should ask in another thread python maybe, I can see the attribute but its beyond my python skills…
Attributes are a relatively new afaik.
good luck… let me know if you succeed.
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Did you find it here?
import bpy
outputFile = ‘C:/tmp/mesh.csv’
verts = [ bpy.context.object.matrix_world * v.co for v in bpy.context.object.data.vertices ]
csvLines = [ “;”.join([ str(v) for v in co ]) + “\n” for co in verts ]
f = open( outputFile, ‘w’ )
f.writelines( csvLines )
f.close()
They say “It requires you to select and set the mesh you want to export as the active object” which I did, but I got:
Python: Traceback (most recent call last):
File “\Text”, line 5, in
File “\Text”, line 5, in
TypeError: Element-wise multiplication: not supported between ‘Matrix’ and ‘Vector’ types
Attempted with both my object and with a default cube in a factory default startup file.
Yes thats where I found that, but I got further with this…
<bpy_struct, FloatVectorAttribute(“NEWPOS”) at 0x000000747E7C81F8>
so its there, but the question is how to read it?
Plus that previous one refers to ‘vertex’ attributes, we are trying to read the object attributes.
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did you ask in python support?
He moved the thread to that category already, I believe.
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Yep, this topic’s now in Python Support. I’d very much appreciate some – the code AlphaChannel and I found is from 2016, so I understand if Blender’s Python implementation’s changed, but with the right syntax this should still be feasible, yes? My apologies for flailing, when I first asked this I had good reason to believe it wasn’t gonna be a coding issue.
I tried this one:
import bpy
m = bpy.context.object.evaluated_get(bpy.context.evaluated_depsgraph_get()).to_mesh()
for v in range(0, len(m.vertices)):
print(str(v) + " | " + str(m.vertices[v].co))
Which didn’t error and says it ran, but I can’t find where the data went. I apologize from my noobish ignorance! 
I’m not too familiar with the CSV format, but if it’s literally just a comma between each row and a newline for each column, you could have something like this.
import bpy
import os
def write_verts():
obj = bpy.context.object
if obj is None or obj.type != "MESH":
return
# Output geometry
obj_eval = obj.evaluated_get(bpy.context.view_layer.depsgraph)
filepath = "vertices.csv"
with open(filepath, "w") as file:
# Write the header, pos x | pos y | pos z
file.write("pos x,pos y,pos z\n")
for v in obj_eval.data.vertices:
# ":.3f" means to use 3 fixed digits after the decimal point.
file.write(f",".join(f"{c:.3f}" for c in v.co) + "\n")
print(f"File was written to {os.path.join(os.getcwd(), filepath)}")
if __name__ == "__main__":
write_verts()
Based on your blend file, this produces a vertices.csv file with this format:
pos x,pos y,pos z
0.762,-1.298,3.000
0.000,-1.500,3.000
1.298,-0.762,3.000
-1.298,-0.762,3.000
-1.500,0.000,3.000
-0.762,-1.298,3.000
1.016,-1.730,1.000
0.979,-1.666,1.630
0.000,-1.926,1.630
0.000,-2.000,1.000
0.885,-1.506,2.304
0.000,-1.741,2.304
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One of the questions was how does one read these attributes here?
Does anyone have a clue?
Far more helpful as geonodes can generate these and set them on an object.
Both of these worked – thanks oodles!
print (bpy.context.object.data.attributes[‘My_Attribute’].data,print())
<bpy_collection[4], FloatAttribute.data> None
print (bpy.context.object.data.attributes[‘My_newpos’].data,print())
<bpy_collection[4], FloatVectorAttribute.data> None
print (bpy.context.object.data.attributes[‘Attribute’].data,print())
<bpy_collection[4], FloatColorAttribute.data> None
Did this work for you? Because even after I cleared out the smartquotes it errored, and we have two working solutions above – I’m looking to mark this solved.
it returns this, not the actual data.
<bpy_collection[8], FloatVectorAttribute.data> None
bpy.data.meshes[‘Cube.003’].attributes.values()
will tell me what attributes are on the object
[bpy.data.meshes[‘Cube.003’].attributes[‘fa’], bpy.data.meshes[‘Cube.003’].attributes[‘va’]]
but how do I get to the values within??
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Next time, do print(dir(method)) to output all of the methods, classes, functions, etc of an API element. help() & type() are also there for accessibly outputs.
Here’s how to get values of all attributes.
import bpy
o = bpy.data.objects["Suzanne"]
for a in o.data.attributes:
print(a.data)
Or:
for a in o.data.attributes:
for d in a.data:
print(d)
This will list per-vertex in this case, because it’s geometry… and that can slow Blender down though.
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Thanks, but Im after these values…
thats just showing me what I know already, how do I get to access the values shown in the circle?
Sorry my python is not great…
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import bpy
o = bpy.data.objects["Suzanne"]
for a in o.data.attributes:
for d in a.data:
print(d.value)
Don’t take this the wrong way, but why aren’t you checking these things yourself using the methods I described? It’s easy enough to check on your own, I think.
Ah, it outputting to the system console, I didn’t have it open, Thankyou.
and no, its not easy, not when you dont have a clue.
Thankyou…
Quick edit, ok, so its returning floats and ints but no vec3 or vec4.
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This is because you’ve chosen vertex as your requested data type… if you want a different type you need to state that by changing your data type when you create your mesh attribute. Note: You can also click on the arrow icon below the plus & minus attribute icons to convert existing attributes to other data types.
If you choose a different data type, type Vector for instance you’ll need to change d.value to d.vector.
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