根据odoo规则修改py文件中得import顺序

sf_manufacturing/models/mrp_maintenance.py

@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
-from odoo import api, fields, models, _
 from dateutil.relativedelta import relativedelta
+from odoo import api, fields, models, _
+
 
 
 class MaintenanceEquipment(models.Model):