Parts list script for Fusion 360 - components are aggregated by dimensions

partslist.py

import adsk.core
import adsk.fusion
import csv
import os
import os.path

# Inspired by: https://forums.autodesk.com/t5/fusion-360-design-validate/parts-list-with-dimensions/m-p/9642058/highlight/true#M223047


def run(context):
    product = adsk.core.Application.get().activeProduct
    design = adsk.fusion.Design.cast(product)

    parts = {}
    for occurrence in design.rootComponent.occurrences:
        for body in occurrence.component.bRepBodies:
            dimensions = body.boundingBox.minPoint.vectorTo(body.boundingBox.maxPoint).asPoint()
            dimensions = tuple(sorted(dimensions.asArray()))
            if dimensions not in parts:
                parts[dimensions] = dict(quantity=0, names=set())
            parts[dimensions]['quantity'] += 1
            parts[dimensions]['names'].add(occurrence.component.name)

    fname = os.path.join(os.environ['HOME'], '{}-parts.csv'.format(design.rootComponent.name))
    with open(fname, 'w', newline='') as output:
        writer = csv.writer(output)
        writer.writerow(('no', 'quantity', 'd1', 'd2', 'd3', 'components'))
        for i, (dimensions, part) in enumerate(sorted(parts.items())):
            dimensions = tuple(map(lambda d: product.unitsManager.formatInternalValue(d), dimensions))
            writer.writerow((i+1, part['quantity']) + dimensions + (';'.join(part['names']),))
    print('Parts list saved to file: {}\r'.format(fname))