就是一个简单的python查询百度关键词排名的函数，以下是一些简介：1、ua随机2、操作简单方便，直接getrank(关键词，域名)就可以了3、编码转化。编码方面应该没啥问题了。4、结果丰富。不仅有排名，还有搜索结果的title，url，快照时间，符合seo需求5、拿来做个软件或者自己用都很方便。
功能是单线程实现，速度慢，大家可以参考修改成自己需要的。
代码如下:
#coding=utf-8
import requestsimport beautifulsoupimport reimport random
def decodeanyword(w): try: w.decode(‘utf-8’) except: w = w.decode(‘gb2312’) else: w = w.decode(‘utf-8’) return w
def createurl(checkword): #create baidu url with search words checkword = checkword.strip() checkword = checkword.replace(‘ ‘, ‘+’).replace(‘\n’, ”) baiduurl = ‘http://www.baidu.com/s?wd=%s&rn=100’ % checkword return baiduurl
def getcontent(baiduurl): #get the content of the serp ualist = [‘mozilla/4.0+(compatible;+msie+6.0;+windows+nt+5.1;+sv1;+.net+clr+1.1.4322;+tencenttraveler)’, ‘mozilla/4.0+(compatible;+msie+6.0;+windows+nt+5.1;+sv1;+.net+clr+2.0.50727;+.net+clr+3.0.4506.2152;+.net+clr+3.5.30729)’, ‘mozilla/5.0+(windows+nt+5.1)+applewebkit/537.1+(khtml,+like+gecko)+chrome/21.0.1180.89+safari/537.1’, ‘mozilla/4.0+(compatible;+msie+6.0;+windows+nt+5.1;+sv1)’, ‘mozilla/5.0+(windows+nt+6.1;+rv:11.0)+gecko/20100101+firefox/11.0’, ‘mozilla/4.0+(compatible;+msie+8.0;+windows+nt+5.1;+trident/4.0;+sv1)’, ‘mozilla/4.0+(compatible;+msie+8.0;+windows+nt+5.1;+trident/4.0;+gtb7.1;+.net+clr+2.0.50727)’, ‘mozilla/4.0+(compatible;+msie+8.0;+windows+nt+5.1;+trident/4.0;+kb974489)’] headers = {‘user-agent’: random.choice(ualist)}
r = requests.get(baiduurl, headers = headers) return r.content
def getlasturl(rawurl): #get final url while there’re redirects r = requests.get(rawurl) return r.url
def getatext(atext): #get the text with and pat = re.compile(r'(.*?)’) match = pat.findall(atext.replace(‘\n’, ”)) puretext = match[0].replace(”, ”).replace(”, ”) return puretext.replace(‘\n’, ”)
def getcachedate(t): #get the date of cache pat = re.compile(r’.*?(\d{4}-\d{1,2}-\d{1,2}) ‘) match = pat.findall(t) cachedate = match[0] return cachedate
def getrank(checkword, domain): #main line checkword = checkword.replace(‘\n’, ”) checkword = decodeanyword(checkword) baiduurl = createurl(checkword) cont = getcontent(baiduurl) soup = beautifulsoup.beautifulsoup(cont) results = soup.findall(‘table’, {‘class’: ‘result’}) #find all results in this page
for result in results: checkdata = unicode(result.find(‘span’, {‘class’: ‘g’})) if re.compile(r’^[^/]*%s.*?’ %domain).match(checkdata.replace(”, ”).replace(”, ”)): #改正则 nowrank = result[‘id’] #get the rank if match the domain info
reslink = result.find(‘h3’).a resurl = reslink[‘href’] domainurl = getlasturl(resurl) #get the target url restitle = getatext(unicode(reslink)) #get the title of the target page
rescache = result.find(‘span’, {‘class’: ‘g’}) cachedate = getcachedate(unicode(rescache)) #get the cache date of the target page
res = u’%s, 第%s名, %s, %s, %s’ % (checkword, nowrank, restitle, cachedate, domainurl) return res.encode(‘gb2312’) break else: return ‘>100’
domain = ‘www.baidu.com’ #set the domain which you want to search.print getrank(‘百度’, domain)