slice objects in sublists sharing a common propery

slice.py

def slice(objects, prop):
    """
        slice objects in sublists sharing a common propery
    """
    if not objects:
        return []

    def get_prop(obj, prop):
        if not isinstance(objects[0], dict):
            return obj.__dict__[prop]
        return obj[prop]
    
    set_objects = set([get_prop(o, prop) for o in objects])
    return [[o for o in objects if get_prop(o, prop) == obj] for obj in set_objects]