Beginner Blender Python Tutorial: Python Dictionaries Example 2 (used in tutorial: https://youtu.be/FkJ2XanNBR4)

dict_example_2.py

# give Python access to Blender's functionality
import bpy

cube_key = "cubes"
ico_key = "spheres"
cone_key = "cones"

# create a dict of mesh lists
mesh_objects = {
    cube_key: list(),
    ico_key: list(),
    cone_key: list(),
}


# collect all meshs into the dict
for obj in bpy.data.objects:
    if "Cube" in obj.name:
        mesh_objects[cube_key].append(obj)
        continue

    if "Ico" in obj.name:
        mesh_objects[ico_key].append(obj)
        continue

    if "Cone" in obj.name:
        mesh_objects[cone_key].append(obj)


# create a dict of locations
mesh_z_locations = {
    cube_key: 0,
    ico_key: -5,
    cone_key: 5,
}

# loop over the meshes
for key, value in mesh_objects.items():
    for mesh_obj in value:
        mesh_obj.location.z = mesh_z_locations[key]