old_contents: # -*- coding: utf-8 -*-
  from openerp.osv.orm import Model
  from openerp.osv import fields
  import decimal_precision as dp
  from openerp.tools.translate import _
  import logging
  
  class product_product(Model):
      _inherit = 'product.product'
  
      def _cost_price(self, cr, uid, ids, field_name, arg, context=None):
          if context is None:
              context = {}
          res = {}
          for product in self.browse(cr, uid, ids):
              res[product.id] = product.standard_price + product.fixed_cost_price
          return res
  
      _columns = {
          'fixed_cost_price': fields.float(
              'Fixed Cost Price', digits_compute = dp.get_precision('Sale Price')),
          'cost_price': fields.function(_cost_price,
                                        string='Cost Price',
                                        digits_compute=dp.get_precision('Sale Price'),
                                        help=_("The cost price is the standard price unless you install the product_cost_incl_bom module."))
          }
  
  # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
  
new_contents: # -*- coding: utf-8 -*-
  from openerp.osv.orm import Model
  from openerp.osv import fields
  import decimal_precision as dp
  import logging
  
  class product_product(Model):
      _inherit = 'product.product'
  
      def _cost_price(self, cr, uid, ids, field_name, arg, context=None):
          if context is None:
              context = {}
          res = {}
          for product in self.browse(cr, uid, ids):
              res[product.id] = product.standard_price + product.fixed_cost_price
          return res
  
      _columns = {
          'fixed_cost_price': fields.float(
              'Fixed Cost Price', digits_compute = dp.get_precision('Sale Price')),
          'cost_price': fields.function(_cost_price,
                                        string='Cost Price',
                                        digits_compute=dp.get_precision('Sale Price'),
                                        help="The cost price is the standard price unless you install the product_cost_incl_bom module.")
          }
  
  # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
  
subject: Delete translation using _()