python odoo13 两时间相差天数

odoo中赋值当前日期
odoo对象中字段赋值为当前日期（字符串）：fields.date.context_today，fields.date.context_today(self, cr, uid, context=context)，fields.date.today()

odoo对象中字段赋值为当前时间（字符串）：fields.datetime.now()，fields.datetime.context_timestamp(cr, uid, datetime.now(), context=context)
odoo官方建议 date/datetime 的默认值的写法是：fields.date.context_today，fields.datetime.now()

python odoo13 两时间相差天数

如果两时间均为时间格式，直接相减即得天数

def _compute_milestone_progress_time(self):
    for record in self:
        time_count = record.target_date-record.jh_start_date
        if fields.Datetime.today()>record.jh_start_date:
            time_count_yy = fields.Datetime.today()-record.jh_start_date
        else:
            time_count_yy = 0
        if time_count > 0:
            record.progress = (time_count_yy / time_count) * 100
        else:
            record.progress_time = 0.0