TypeError: 'Scene' object is not iterable

Question

I'm trying to search for all items in bpy.context.scene that have same name, but different suffix number (bpy.context.scene["list_1"], .["list_2"] etc.
It works if I search for objects under bpy.context.scene.objects:

for ob in bpy.context.scene.objects:
    if "list" in ob.name:
        print("woohoo!")

But as for items that are stored under scene, I get this error: "TypeError: 'Scene' object is not iterable"

How can I search through these items and remove them from scene with a script? Some have used len() and range() with good result, but I haven't managed to make it work?

Any ideas? :)

Answer 1

You are searching for ID properties of the scene objects ie scene[idprop]

The list of all custom properties names of the scene will be in scene.keys()

The keys() method of a blender object returns a list of all custom property names.

for key in scene.keys():
    if key.startswith("list"):
        print("scene['%s'] = " % key, scene[key].to_list())

Similarly the items() method returns a list of key value pairs

for key, val in scene.items():
    if key.startswith("list"):
        print("scene['%s'] = " % key, val.to_list())

also lets say we want "list_2" but don't know if it exists, if it doesn't scne["list_2"] will throw a key error, in this case recommend using get

list2 = scene.get("list_2")
if list2 is not None:
    print(list2.to_list())
else:
    print("no list named list_2 in scene")

or list2_exists = "list_2" in scene.keys() could be used.