def find_orphan_products(app):
    ''' Print names of orphaned Products, those that do not have a corresponding module. '''
    import Products
    product_module_names = dir(Products)
    product_objects = app.Control_Panel.Products.objectValues()
    product_objects.sort(lambda a,b: cmp(a.id,b.id))
    for prod in product_objects:
        if not prod.id in product_module_names:
            print prod.id
            if not hasattr(prod, 'thisIsAnInstalledProduct'):
                print "  not an installed product"