Proteus / property fields

# -*- coding: utf-8 -*-

from datetime import datetime
from optparse import OptionParser

from proteus import Model, Wizard
from proteus import config

database = 'example'
user = 'admin'
psw = 'admin'

config.set_trytond(database, user=user, password=psw)

# ----------------------------

Category = Model.get('product.category')
Template = Model.get('product.template')
Product = Model.get('product.product')
UOM = Model.get('product.uom')

# Create a category
category1 = Category()
category1.name = 'Category 1'
category1.save()

# Create a template
template = Template()
template.name = 'Product template 1'
template.type = 'goods'
template.category = category1

product = template.products[0]
product.code = '00001'

template.default_uom, = UOM.find([('symbol','=','u')])

# How do I assign a list_price or cost_price (Property fields)?
template.list_price = ???????????
template.cost_price = ???????????

template.save()