使用Python查询Yelp

Question

我在收集关于yelp的餐馆信息。我有餐厅的名字，我用的是yelpapi。

我输入了以下内容：

from yelpapi import YelpAPI
yelp_api = YelpAPI(<key>, <secret>, <token>, <token secret>)
search_results = yelp_api.search_query(name = 'Neptune Oyster', location='Boston, MA'),

但最终得到了20家企业的名单，其中没有一家是正确的。如何在API查询中指定餐厅名称？

另外，我该如何为一家给定的餐厅提取所有的评论呢？

谢谢!

Answer 1

这是你要找的餐馆吗？

http://www.yelp.com/biz/neptune-oyster-boston?

最后的“/”之后的每一件事都是餐馆的叫喊声。

一旦您拥有了yelp-id，您就需要使用业务api来获得评论。

以下是业务api的文档

http://www.yelp.com/developers/documentation/v2/business

你想得到评论的请求如下：

http://api.yelp.com/v2/business/neptune-oyster-boston

而且，特别是对于python，请求可以构造为

yelp_api.business_api('neptune-oyster-boston')

它只给了我一段评论，为了完整的评论，我想你可能需要刮一下这个网站。看看BeautifulSoup和Scrapy。

最后，要回答您的第一个问题，请尝试在搜索参数中将name替换为term。您可以在此页面中找到其他有效搜索参数的列表：

http://www.yelp.com/developers/documentation/v2/search_api

通过下面的查询，api为我提供了正确的业务。

yelp_api.search_query(term='neptune oysters', location='boston', limit=1)

祝你好运，祝你刮风愉快！

Answer 2

较新的Yelp (v3)导致了对API的使用方式和返回信息的一些更改。短于此，v2只需一个电话就可以得到评论。v3需要两次调用。下面是我如何才能让它开始工作。你的里程可能会不同。

#Finding reviews for a particular restaurant
import http.client
import json
import urllib

headers = {
'authorization': "Bearer <access_token>",
'cache-control': "no-cache",
'postman-token': "<token>"
}
#need the following parameters (type dict) to perform business search. 
params = {'name':'Neptune oyster', 'address1':'63 Salem St.', 'city':'Boston', 'state':'MA', 'country':'US'}

param_string = urllib.parse.urlencode(params)
conn = http.client.HTTPSConnection("api.yelp.com")
conn.request("GET", "/v3/businesses/matches/best?"+param_string, headers=headers)

res = conn.getresponse()
data = res.read()
data = json.loads(data.decode("utf-8"))

b_id = data['businesses'][0]['id']

r_url = "/v3/businesses/" + b_id + "/reviews"    #review request URL creation based on business ID
conn.request("GET",r_url,headers=headers)
rev_res = conn.getresponse()     #response and read functions needed else error(?)
rev_data = rev_res.read()
yelp_reviews = json.loads(rev_data.decode("utf-8"))

print(json.dumps(yelp_reviews, indent=3, separators=(',', ': ')))

Answer 3

使用term而不是name指定餐厅名称似乎是可行的。

from yelpapi import YelpAPI
yelp_api = YelpAPI(key, secret, token, token_secret)
search_results = yelp_api.search_query(term='Neptune Oyster', location='Boston, MA')

>>> for business in search_results['businesses']:
...     print business['name']
... 
Neptune Oyster
Island Creek Oyster Bar
B & G Oysters
Rabia's
Union Oyster House
Pauli's
James Hook & Co
Row 34
Atlantic Fish Company
Mare
The Oceanaire Seafood Room
Alive & Kicking Lobsters
The Daily Catch
Yankee Lobster Fish Market
The Barking Crab
Boston Chowda Co.
Legal Sea Foods
Salty Dog Seafood Grille & Bar
Legal Sea Foods
Legal Sea Foods

根据文档，你只能摘录一篇评论。您可以使用业务查询和从搜索查询中获得的业务id来获得这个结果：

>>> search_results = yelp_api.search_query(limit=1, term='Neptune Oyster', location='Boston, MA')
>>> if search_results['businesses'][0]['name'] == 'Neptune Oyster':
...     business_id = search_results['businesses'][0]['id']
...     business_results = yelp_api.business_query(id=business_id)
...     for review in business_results['reviews']:
...         print review['excerpt']
... 
Price/Food
- Waited almost two hours for this place! I talked to some people that were waiting in line and they were all raving that Neptune is the BEST...