start_time = datetime.datetime.strptime('2021-01-01 10:00:00', '%Y-%m-%d %H:%M:%S')
end_time = datetime.datetime.strptime('2021-01-01 11:30:00', '%Y-%m-%d %H:%M:%S')
total_time = (end_time - start_time).total_seconds() / 60
bandwidth_usage = 200 # MB
price_per_minute = 0.1
total_price = price_per_minute * total_time
print("服务总时间:", total_time, "分钟")
print("使用流量:", bandwidth_usage, "MB")
print("费用:", total_price, "元")
这样,我们就可以得到直播视频流服务的计费情况。