2018-10-25 17:49:51 监控软件 原始

2018-10-2517:49:51 切割后

2018/10/25 17:49:51 格式化后

shijian = ' '.join(response.xpath('//html/body/div/div/div/div/div/a[4]/text()').extract())

        print(shijian,'原始')

        if  '' != shijian.split('-',1)[0]:

            shijian = '暂无'

            print(shijian,'暂无')

        else:

            shijian_time = ''.join(shijian.split(' ')[:2])

            shijian_me = datetime.strptime(shijian_time,'%Y-%m-%d%H:%M:%S').strftime('%Y/%m/%d %H:%M:%S')

            print(shijian_time,'切割后')

            print(shijian_me,'格式化后')