Steem 市场价和喂价过去7天内的变化， 报价取样数据为每小时：

![](https://i.imgur.com/UfgsQQs.png)

附上数据采集的python脚本,每小时运行一次脚本，小时数据就会采集到 json文件。
~~~
def collect_data():
    coinmarketcap = Market()
    cont=Converter();
    s = Steem()

    #get steem feed_price
    feed_price = s.get_current_median_history_price()['base']
    feed_price= float(feed_price.split()[0])

    #get steem market_price
    Steem_market_price_USD= float(coinmarketcap.ticker('steem', convert='USD')[0]['price_usd'])

    steemit_data_history_hour.update({str(datetime.utcnow())[:-7]:{
                                      'steem_feed_price':reward_data[0],
                                      'Steem_market_price_USD':Steem_market_price_USD,
                                      }
                                      })
    with open('steemit_data_history_hour.json', 'w') as fp:
        json.dump(steemit_data_history_hour,fp, indent=4,default=str)
~~~