stepをfusion360からエクスポートするスクリプト。16行目を自分の環境に合わせて変える。

export step from fusion.py

import adsk.core, adsk.fusion, traceback
import os.path, sys

def run(context):
    ui = None
    try:
        app = adsk.core.Application.get()
        ui = app.userInterface

        # get active design
        product = app.activeProduct
        design = adsk.fusion.Design.cast(product)

        # export
        exportMgr = design.exportManager
        fileName = "#{change C:/Users/xxx to your directory} C:/Users/xxx/bridge.step"
        stpOptions = exportMgr.createSTEPExportOptions(fileName)
        exportMgr.execute(stpOptions)

        # show progressDialog. this is more useful than ui.messageBox because this does not require click to close.
        pseudo_auto_close_modal("Exporting...")

    except:
        if ui:
            ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))


# substitute progressDialog for auto-closing dialog.
# https://forums.autodesk.com/t5/fusion-360-api-and-scripts/ambient-alert-to-users-from-api/td-p/6862812
# Unfortunately we haven't yet exposed access to any of the message mechanisms in Fusion except for the message box and a progress bar dialog.
def pseudo_auto_close_modal(message):
    from time import sleep

    ui = None
    try:
        app = adsk.core.Application.get()
        ui = app.userInterface

        # Set styles of progress dialog.
        progressDialog = ui.createProgressDialog()
        progressDialog.cancelButtonText = 'Cancel'
        progressDialog.isBackgroundTranslucent = False
        progressDialog.isCancelButtonShown = True

        # Show dialog
        end_progress = 100
        progressDialog.show(message, 'Percentage: %p, Current Value: %v, Total steps: %m', 0, end_progress,
                            1)

        # stop. i have to do this. Otherwise, progress dialog disappear too fast to see.
        sleep(0.1)

        # update status.
        for i in range(end_progress):
            # If progress dialog is cancelled, stop.
            if progressDialog.wasCancelled:
                break

            # Update progress value of progress dialog
            progressDialog.progressValue = i + 1

        # Hide the progress dialog at the end.
        progressDialog.hide()

    except:
        if ui:
            ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))