python utc时间转北京时间

t = "2021-04-08T01:00:00"
def format_time(self,india_time_str, india_format='%Y-%m-%dT%H:%M:%S'):
    india_dt = datetime.datetime.strptime(india_time_str, india_format)
    local_dt = india_dt + datetime.timedelta(hours=8)
    local_format = "%Y-%m-%d %H:%M:%S"
    time_str = local_dt.strftime(local_format)
    return time_str