Python - 抓取结果以错误消息结尾答案

【问题标题】：Python - Crawl Result Ended Up with Error MessagesPython - 抓取结果以错误消息结尾
【发布时间】：2015-11-05 09:01:36
【问题描述】：

我正在尝试使用他们的API 从 Expedia 提取房价和空房数据。但是，我遇到的问题是，当酒店在某一天没有空房时，会弹出错误消息。

当我根据以下代码使用Print JD时的错误信息是：

{u'EanWsError': {u'category': u'SOLD_OUT', u'exceptionConditionId': -1, u'handling': u'RECOVERABLE', u'itineraryId': -1, u'ErrorAttributes': {u'errorAttributesMap': {u'entry': {u'value': 8001, u'key': u'SUPPLIER_ERROR_CODE'}}}, u'verboseMessage': u'errors.supplier.hotel.nolonger; error from supplier; 8001', u'presentationMessage': u'***The hotel you selected is no longer available. Please choose another.***'}, u'hotelId': 447643, u'customerSessionId': u'0AB2902D-92F0-CC91-50D2-6AA567897340', u'@size': u'0'}

import urllib2
import requests
import md5
import time
import datetime
import json
import csv
from datetime import date
from datetime import timedelta

#GENERATING SPECIAL KEYS FOR URL (GET)
apiKey = 'xxxxxxxxxxxxxxx' #private keys, can't disclose
secret = 'xxxxxxxxxxxxxxx' #private keys, can't disclose
cid = 'xxxxxxxxxxxxxxx' #private keys, can't disclose

hash = md5.new()
timestamp = str(int(time.time()))
sig = md5.new(apiKey + secret + timestamp).hexdigest()

#Date and Hotel Variables
StartDate = '12/31/2015'
EndDate = '12/31/2015'
HotelIDs = '447643'

url = 'http://api.ean.com/ean-services/rs/hotel/v3/avail?apiKey=' + apiKey + '&sig=' + sig + '&cid=' + cid + '&currencyCode=TWD&hotelId='+ HotelIDs + '&arrivalDate=' + StartDate + '&departureDate=' + EndDate + '&room1=1'
res = requests.get(url)
jd = json.loads(res.text)['HotelRoomAvailabilityResponse']

Name = jd['hotelName']

for Rooms in jd['HotelRoomResponse']:
    Descp = Rooms['rateDescription']
    Avail = Rooms['currentAllotment']
    Rate = Rooms['RateInfo']['ChargeableRateInfo']['@nightlyRateTotal']

    print Name, Descp, Avail, Rate

我该如何解决这个问题？

有没有更简单的方法来使用 python 提取数据，因为我认为我的方法实际上效率很低。

【问题讨论】：

标签： python json api

【解决方案1】：

也许我遗漏了一些东西，但我不确定你为什么在这里使用 beautifulsoup。您应该尝试将其剪掉并使用urllib2 和json，如下所示。

url = 'http://api.ean.com/ean-services/rs/hotel/v3/avail?apiKey=' + apiKey + '&sig=' + sig + '&cid=' + cid + '&currencyCode=TWD&hotelId='+ HotelIDs + '&arrivalDate=' + StartDate + '&departureDate=' + EndDate + '&room1=1'
jd = json.load(urllib2.urlopen(url))

那么对于错误处理，我将只使用一些 try 块，例如：

try:
    Name = jd['hotelName']

    for Rooms in jd['HotelRoomResponse']:
          Descp = Rooms['rateDescription']
          Avail = Rooms['currentAllotment']
          Rate = Rooms['RateInfo']['ChargeableRateInfo']['@nightlyRateTotal']

          print Name, Descp, Avail, Rate
 except:
     try:
          Error = jd['hotelId']
          print "Error with " + Error
     except:
          print "unknown Error"

【讨论】：