Question

我已經使用yql控制檯並收到了相應的響應。然而，發送一個基於python的查詢，我仍然有一個錯誤。首先控制檯示例：

select * from yahoo.finance.quotes where symbol in ("yahoo", "aapl") 

我收到一個包含預期字段的結果塊。蟒蛇例如：

import requests 
base_url = 'https://query.yahooapis.com/v1/public/yql?' 
query = 'q=select * from yahoo.finance.quotes where symbol in ("YHOO", "AAPL")' 
full_query=base_url + query 
result = requests.get(full_query) 
print(result.content) 

有以下回應：

B '發現\ n沒有定義表yahoo.finance.quotes'

我缺少什麼？ TIA， 克萊頓

Answer 1

你缺少什麼是查詢的ENV部分：

import json 
import urllib 
from pprint import pprint 

base_url = 'https://query.yahooapis.com/v1/public/yql?' 
query = { 
    'q': 'select * from yahoo.finance.quote where symbol in ("YHOO","AAPL")', 
    'format': 'json', 
    'env': 'store://datatables.org/alltableswithkeys' 
} 

url = base_url + urllib.urlencode(query) 
response = urllib.urlopen(url) 
data = response.read() 
quote = json.loads(data) 
pprint(quote) 

輸出：

{u'query': {u'count': 2, 
      u'created': u'2014-12-06T03:53:23Z', 
      u'lang': u'en-US', 
      u'results': {u'quote': [{u'AverageDailyVolume': u'38009400', 
            u'Change': u'+0.58', 
            u'DaysHigh': u'51.25', 
            u'DaysLow': u'50.51', 
            u'DaysRange': u'50.51 - 51.25', 
            u'LastTradePriceOnly': u'50.99', 
            u'MarketCapitalization': u'48.305B', 
            u'Name': u'Yahoo! Inc.', 
            u'StockExchange': u'NasdaqNM', 
            u'Symbol': u'YHOO', 
            u'Volume': u'15418123', 
            u'YearHigh': u'52.62', 
            u'YearLow': u'32.15', 
            u'symbol': u'YHOO'}, 
            {u'AverageDailyVolume': u'57049800', 
            u'Change': u'-0.49', 
            u'DaysHigh': u'116.08', 
            u'DaysLow': u'114.64', 
            u'DaysRange': u'114.64 - 116.08', 
            u'LastTradePriceOnly': u'115.00', 
            u'MarketCapitalization': u'674.5B', 
            u'Name': u'Apple Inc.', 
            u'StockExchange': u'NasdaqNM', 
            u'Symbol': u'AAPL', 
            u'Volume': u'38318896', 
            u'YearHigh': u'119.75', 
            u'YearLow': u'70.5071', 
            u'symbol': u'AAPL'}]}}}