Blender Sushi Script to shuffle the transform position of selected meshes.

jgbpy_shuffleMeshPosition.py

# Based on Example Script "Python In Maya" by Shaun Friedberg.
# http://www.pyrokinesis.co.nz 

import bpy
import random

def completeShuffle(listToShuffle):
    '''
    '''

    #
    if not isinstance(listToShuffle, list):
        raise RuntimeError ('Please provide a list of items to shuffle: {listToShuffle}'.format(listToShuffle = list) )


    # Get the length of the list
    numOfListItems = len(listToShuffle)

    # Loop over the list until none are left
    while numOfListItems > 1:

        # Decrement numOfListItems
        numOfListItems = numOfListItems - 1

        # Select an item randomly and shuffle
        randomItem = random.randrange(numOfListItems)
        listToShuffle[randomItem], listToShuffle[numOfListItems] = listToShuffle[numOfListItems], listToShuffle[randomItem]

    # Return our shuffled list
    return listToShuffle

# USAGE testList = [1,2,3,4,5]


def randomlySwapSelectedMesh():
    meshes = {}
    meshes['transforms'] = []
    meshes['mesh'] = bpy.context.selected_objects

    # Check if there is more than one mesh selected
    if not len(meshes['mesh']) > 1:
        raise RuntimeError('Please select more than one mesh to swap!')

    print('ORIGINAL POSITION')

    # LIERO: don't append object location to the list, use location.copy()

    for mesh in meshes['mesh']:
        #meshes['transforms'].append(mesh.location)
        meshes['transforms'].append(mesh.location.copy())
        print('Mesh: ', mesh)
        print('Old Location: ', mesh.location)

    print('-----------' * 5)

    # Shuffle the list of transforms
    #random.shuffle(meshes['transforms'])
    completeShuffle(meshes['transforms'])

    print('AFTER SHUFFLE PROCESS')

    # Iterate over mesh and apply new transforms
    for newTransform, mesh in zip(meshes['transforms'], meshes['mesh']):
        print('New Location: ', newTransform)
        print('Mesh: ', mesh)
        mesh.location = newTransform

    print('-----------' * 5)

randomlySwapSelectedMesh()