Accessing non-subscriptable properties

Question

Scripting the Blender, I successfully did bpy.ops.render.render(some_args) but bpy.ops.render['render'] fails with BPyOpsSubMod object is not subscriptable. This puzzles me since I expected that, likewise in Javascript, any Python object is a dictionary and I can access object methods either by obj.member or obj['member']. How do I work around the non-subscriptable properties when I want to reference them by name?

Aran-Fey · Accepted Answer · 2018-07-07T08:47:58.163

3

It's not true that every object is a dictionary. But most objects have a dictionary, accessible through the name .__dict__.

You can use either

bpy.ops.render.__dict__['render']

or

getattr(bpy.ops.render, 'render')

edited Jul 07 '18 at 08:47

answered Jul 21 '16 at 16:30

Aran-Fey

39,665
11
104
149

*Every object has a dictionary* is **False**: `[].__dict__`? Accessing `__dict__` may work in OP's case if they have a function – Moses Koledoye Jul 21 '16 at 16:31
`bpy.ops.render.__dict__` fails `with AttributeError __dict__` – Little Alien Jul 21 '16 at 16:34
but `getattr` seems to give what I want. – Little Alien Jul 21 '16 at 16:38

score 0 · Answer 2 · answered May 06 '22 at 07:25

If you want to know what is inside a non-subscriptable object that does not have a dict you can do this:

import csv # use csv dialect as example object
a = csv.get_dialect('excel')
field_names = [v for v in dir(a) if not v.startswith('__')]
fields = [(getattr(a, v),v) for v in field_names]

print(fields)

Accessing non-subscriptable properties

2 Answers2