将当前时间转换成字符串

需要安装arrow 模块
def timestr(**kwargs):
    """
    generate "2017-03-07T00:00+0800" format time string
    :param kwargs: shifting parameters e.g. hours=3  days=-1
    :return:
    """
    now = arrow.now(tz='Asia/Shanghai')
    t = now.shift(**kwargs)
    return t.format('YYYY-MM-DDTHH:mm+0800')