使用python在yelp api中获取身份验证签名

我试图使用urllib2和json在python中编写一个简单的脚本，将json打印到控制台

目前，我在获取auth_签名值时遇到问题。我已经用适当的键设置了url变量，除了auth_签名。我该怎么办

以下是我所拥有的：

import json
import urllib2
import oauth2


timestamp = oauth2.generate_timestamp
nonce = oauth2.generate_nonce

url = "http://api.yelp.com/v2/search?term=food&location=Seattle&callback=callbackYelpAuth&oauth_consumer_key=XXX&oauth_consumer_secret=XXX&oauth_token=XXX&oauth_signature_method=HMAC-SHA1&oauth_timestamp=" + str(timestamp) + "&oauth_nonce=" + str(nonce) + "&oauth_signature=" + str(????)

json_obj = urllib2.urlopen(url)
data = json.load(json_obj)
print data

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下面的代码工作正常。希望它能帮助你

import urlparse


url = "http://api.yelp.com/v2/search?term=food&location=Seattle&callback=callbackYelpAuth&oauth_consumer_key=XXX&oauth_consumer_secret=XXX&oauth_token=XXX&oauth_signature_method=HMAC-SHA1&oauth_timestamp=temstamp_value&oauth_nonce=nonce_value&oauth_signature=signature_value"
parsed = urlparse.urlparse(url)
params = urlparse.parse_qsl(parsed.query)
for x,y in params:
    print "Parameter = "+x,", Value = "+y