在Python中对非值对进行URL编码

我试图在Python中使用Google的AJAX（JSON）Web搜索API。我被卡住了，因为Python的urllib.urlencode（）只接受值对编码，而不是字符串本身。在Google的API中，查询字符串是搜索词，它与变量无关

query = "string that needs to be encoded"
params = urllib.urlencode(query) # THIS FAILS
# http://code.google.com/apis/ajaxsearch/documentation/reference.html
url = "http://ajax.googleapis.com/ajax/services/search/web?v=1.0&rsz=large&%s&%s" % (params, GOOGLE_API_KEY)

request = urllib2.Request(url)
request.add_header('Referer', GOOGLE_REFERER)

search_results = urllib2.urlopen(request)
raw_results = search_results.read()
json = simplejson.loads(raw_results)
estimatedResultCount = json['responseData']['cursor']['estimatedResultCount']

if estimatedResultCount != 0:
    print "Google: %s hits" % estimatedResultCount

---

我该如何对我的搜索词进行URL编码？

我想你是在寻找