我构建了一个python 2.7 BING SEARCH API pull,每页返回50个计数,并通过每次更改偏移值50来分页。我的结果写入JSON文件。
我在api调用的标题中指定了User-Agent和X-Search-ClientIP。我还指定了一个网页的responseFilter,以及' en-us'的mkt值。
我很担心,因为我得到了几个重复的搜索结果。当我翻页10次(因此,检索50 X 10 = 500个结果)时,其中大约17%是重复记录。有没有办法可以强制bing只返回非重复值?您建议采取哪些额外步骤,以便尽可能接近获取唯一值?
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import httplib, urllib, base64, json, re, os, sys, codecs, locale, time
pull_count = 50 ## Var used to control # of hits per pull
offset = 0 ## Var used to push pagination counter to http get
num_paginations = 10 ## Var used to control max # of paginations
local_counter = 1 ## Helps Write commas to json file for all but last run
timer_counter = 1 ## Variable used to make system wait after 5 pulls
dump_file = 'BingDump.json' ## Name of local file where results are written to
api_domain = 'api.cognitive.microsoft.com'
query = 'Bill Gates'
user_agent = 'Mozilla/5.0 (MAC OSX, Educational Usage Only)'
x_search = '199.99.99.99'
#Request Headers, open connection, open file write to output file
headers = {
'Ocp-Apim-Subscription-Key': 'MYSUBSCRIPTIONKEY',
'User-Agent' : user_agent,
'X-Search-ClientIP': x_search,
}
conn = httplib.HTTPSConnection(api_domain)
fhand = open(dump_file,'w')
#Function to build URL for API PULL
def scraper() :
pull_count_str = str(pull_count)
offset_str = str(offset)
params = urllib.urlencode({
'q': query,
'count': pull_count_str,
'offset': offset_str,
'mkt': 'en-us',
'safesearch': 'Moderate',
'responseFilter': 'webpages', #controls whether pull scrapes from web/image/news etc
})
return(params)
#Function set to wait 4 seconds after 5 pulls
def holdup(entry) :
if entry != 5 :
entry += 1
else:
entry = 1
time.sleep(4)
return(entry)
#Function that establishes http get, and writes data to json file
def getwrite(entry1, entry2) :
conn.request("GET", "/bing/v5.0/search?%s" % entry1, "{body}", entry2)
response = conn.getresponse()
data = response.read()
json_data = json.loads(data)
fhand.write(json.dumps(json_data, indent=4))
#Main Code - Pulls data iteratively and writes it to json file
fhand.write('{')
for i in range(num_paginations) :
dict_load = '"' + str(local_counter) + '"' + ' : '
fhand.write(dict_load)
try:
link_params = scraper()
print('Retrieving: ' + api_domain + '/bing/v5.0/search?' + link_params)
getwrite(link_params, headers)
except Exception as e:
print("[Errno {0}] {1}".format(e.errno, e.strerror))
fhand.write('"Error. Could not pull data"')
offset += pull_count
if local_counter != num_paginations : fhand.write(', ')
local_counter += 1
timer_counter = holdup(timer_counter)
fhand.write('}')
fhand.close()
conn.close()
答案 0 :(得分:0)
感谢您的询问。我们注意到您有以下#个分页:
我注意到的一件事是分页设置为10。 num_paginations = 10 ## Var用于控制最大分页数。
谢谢, 帕特里克