BASIC: bpy.data.meshes error

Coding Python Support
1

I am very noob to Blender Python scripting, trying to follow tutorial here:

http://en.wikibooks.org/wiki/Blender_3D:_Noob_to_Pro/Advanced_Tutorials/Python_Scripting/Export_scripts

The weird thing is, something so straight forward trying to run this from the Python Console window:

cubedata = bpy.data.meshes[‘Cube’]

Give me error:

Traceback (most recent call last):
File “<blender_console>”, line 1, in <module>
KeyError: ‘bpy_prop_collection[key]: key “Cube” not found’

Any idea why?

2

I am using the Blender built 2.61.0 r42615

3

you’ve got no object named ‘Cube’ in scene or in memory… that’s why
try it on default scene and should work, or add an object named Cube

4

I think it’s a bug because I am sure there is Cube, Lamp, Camera in the scene.

I tried using older version of Blender and it works.

Next weird thing:

import Blender

This does not seem to work anymore, I think there is no Blender module anymore.

5

import Blender is from 2.49, it no longer exists in the new API.

The name of your cube mesh is not named “Cube”. Although it typically is in a default scene.

Try:


import bpy

ob = bpy.data.objects["Cube"]
cube_data = ob.data
print(cube_data.name)
# Redundantly fetch the same data.
cubedata = bpy.data.meshes[cube_data.name]
6

@Atom

I see, you are right, since my scene is not really the default scene, apparently the Cube Object I have at this scene is actually stored as vertex data named “Cube.004” (I looked under Outliner).

I re-load Factory Settings and now it is good.

“Import Blender” is no longer available, isn’t it? Ok, apparently I am following the old tutorial hmm… I will find different source.

Thanks all~