正在使用Python获取API

Question

我一直在尝试从BTC-E price API获取一个价格，我不能仅仅指定price[109:116]作为例子。因为如果发生这种情况，它只会以错误的格式打印2个数字。我只需要抓住“最后一次”之后的内容

from urllib2 import Request, urlopen, URLError

def btceapi():
    request = Request('https://btc-e.com/api/2/btc_usd/ticker')
    try:
        response = urlopen(request)
        price = response.read()
        print price[109:116]
    except URLError, e:
        print 'Not Found'

btceapi()

Answer 1

从API检索到的price变量是

{"ticker":{"high":298.99899,"low":263.20001,"avg":281.0995,"vol":10566249.17861,"vol_cur":37737.87504,"last":291,"buy":291.493,"sell":291.001,"updated":1436554875,"server_time":1436554876}}'

这就是JSON，你可以用它解析成字典：

import json

<snip...>
    price = response.read()
    print json.loads(price)["ticker"]["last"]