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Python3 crawl the basic data of the listed company

basic idea is to use Tushare to obtain the stock code, in order to obtain a link to the company's information, using requests to obtain the Web page source code, using BS4 to parse the structure of the Web page, find the necessary information, and then print or save.Summed up, here with the TUSHARE,REQUESTS,BS4, and other basic content. The demo code prints the information directly in the window, or you can try to save the information in a file such as Excel,csv.The next step is the code sectio

Spirngmvc integrates mybatis to implement CRUD and mybatiscrud

is returned. According to the above configuration, springmvc's overall architecture of integrating mybatis has been completed, 3. write code for testing Controller SsiController. java Package org. ssi. controller; Import java. util. List; Import javax. servlet. http. HttpServletRequest; Import org. springframework. beans. factory. annotation. Autowired;Import org. springframework. stereotype. Controller;Import org. springframework. web. bind. annotation. PathVariable;Import org. springframewo

Google PageRank query, batch query, identify true and false

$q =trim ($_get[' Q ']);$SD = (int) trim ($_get[' SD '));$t = (int) trim ($_get[' t ']);if (Strstr ($q, "")) {$isulist = 1;$ulist =explode ("", $q);for ($i =0; $i $domain = ';$domain =matchdomain ($ulist [$i]);if ($domain $q 2.= $domain. " ";}}$ulist =explode ("", $q 2);}else{$q 2=matchdomain ($q);} Domain Name: if ($q 2echo $q 2;}else{echo "Www.111cn.net tool.1

First Use requests library Crawl code

(Root) if not Os.path.exists (image_path): r = requests.get (URL) with open (Image_path, ' WB ') as File_obj: file_ Obj.write (r.content) print (' picture retention succeeded ') except: print ("Crawl failed") 4. ip138 Crawl Import requests URL = "http://m.ip138.com/ip.asp?ip=" #ip138 query interface IP = ' 202.204.80.112 ' try: r = Requests.get (URL + IP) r.raise_for_status () r.encoding= r.apparent_encoding print (r.text[-500:]) print ("Crawl succeeded.") ")

How to use the seven kn Python SDK to write a synchronization script and use tutorials

=500 u_index=0 for k,f in l_key_files:k2f[k]=f str_k=k if Isinstance (k,str): K=k.decode (CharSet) if K in Qn_se T:update_keys.append (str_k) u_index+=1 if U_index > U_count:u_index-=u_count update_file (K2f,update_keys) Update_keys=[] Else: # upload Upload_fIle (K,os.path.join (basedir,f)) if Update_keys:update_file (k2f,update_keys) print "Sync End" Def update_file (k2f,ulist ): Ops=qiniu.build_batch_stat (bucket_name,

SPIRNGMVC Integrated MyBatis for CRUD

architecture has been completed,Third, write code to testController controllers Ssicontroller.javaPackage Org.ssi.controller;Import java.util.List;Import Javax.servlet.http.HttpServletRequest;Import org.springframework.beans.factory.annotation.Autowired;Import Org.springframework.stereotype.Controller;Import org.springframework.web.bind.annotation.PathVariable;Import org.springframework.web.bind.annotation.RequestMapping;Import Org.springframework.web.bind.annotation.RequestMethod;Import Org.ss

How to Use qiniu Python SDK to write a synchronization script and use the tutorial, pythonsdk

= list_all (bucket_name, bucket) qn_set = set (qn_keys) l_key_files = get_valid_key_files (basedir) k2f = {} update_keys = [] u_count = 500 u_index = 0 for k, f in l_key_files: k2f [k] = f str_k = k if isinstance (k, str): k = k. decode (charset) if k in qn_set: update_keys.append (str_k) u_index + = 1 if u_index> u_count: u_index-= u_count update_file (k2f, update_keys) update_keys = [] else: # upload upload_file (k, OS. path. join (basedir, f) if update_keys: update_file (k2f, update_keys) pr

Retrieving data in a JSP page with an El expression

Request.setattribute ("name", "Carving Heroes");Application.setattribute ("name", "Deer Ding kee");%>${requestscope.name}${applicationscope.name}String [] strs={"clan", "Leaf isolated City", "Simon blowing Snow", "Li Huan"};Request.setattribute ("STRs", STRs);%>${STRS[1]}ListList.add ("Zhou Zhijo");List.add ("Small Zhao");List.add ("Zhao");List.add ("Spider");Request.setattribute ("list", list);%>${LIST[2]}MapMap.put ("A", "Eastern Evil");Map.put ("B", "West Poison");Map.put ("C", "South Emperor

163 AJAX Tab

);Else str = "";Return sta + str;}Function startajaxtabs (){For (var I = 0; I {Var ulobj = document. getElementById (arguments [I]);Ulist = ulobj. getElementsByTagName ("li ");For (var j = 0; j {Var thelist = ulist [j];If (thelist. parentNode. parentNode! = Ulobj) continue; // only the first layer of li is valid fixed 2006.9.29Var ulistlink = thelist. getElementsByTagName ("a") [0];Var ulistlinkurl = ulist

Python self-taught 2--crawler

Crawl the ' Best University Network ', extracting the names and scores of the top 20 universities in 20171 #Coding:utf-82 ImportRequests3 fromBs4ImportBeautifulSoup4 ImportBS45 6 defgethtmltext (URL):7 Try:8r = Requests.get (URL, timeout=30)9 r.raise_for_status ()TenR.encoding =r.apparent_encoding One returnR.text A except: - return "fail" - the deffillunivlist (ulist, HTML): -Soup = BeautifulSoup (HTML,"Html.parser") -

163 AJAX Tab_ajax Related

(Str.indexof ("over")!=-1) Str=str.substr (4); else str= ""; return sta+str; } function Startajaxtabs () { for (Var i=0;i{ var Ulobj=document.getelementbyid (Arguments[i]); Ulist=ulobj.getelementsbytagname ("Li"); for (Var j=0;j{ var thelist=ulist[j]; if (thelist.parentnode.parentnode!=ulobj) continue;//only the first layer of Li effective fixed 2006.9.29 var ulistlink=thelist.getelementsbytagna

How to manually get parameters by action in Struts 2

it is also wrong to place this statement in the construction method. Public String Login () { req = Servletactioncontext.getrequest ();//req's acquisition must implement user = new User () in a specific method; User.setuid (UID); User.setpassword (password); if (userdao.islogin (user)) { req.getsession (). setattribute ("user", user); return SUCCESS; } return LOGIN; } Public

Struts2 's Actioncontext && servletactioncontext

); user.setpassword (password); if (userdao.islogin (user)) { req.getsessiOn (). SetAttribute ("user", user); returnSUCCESS; } return LOGIN; } publicstringqueryall () { req=servletactioncontext.getrequest (); The acquisition of //req must be achieved in a specific way ulist=userdao.queryall (); req.getsession (). SetAttribute ("UList", ulist); returnSUCCESS; } /

Differences between servletactioncontext and actioncontext in struts2

specific method. setuid (UID); User. setpassword (password); If (userdao. islogin (User) {req. getsession (). setattribute ("user", user); Return success;} return login;} Public String queryall () {Req = servletactioncontext. getrequest (); // obtain Req. You must implement ulist = userdao in the specific method. queryall (); req. getsession (). setattribute ("ulist",

Struts Learning Notes (iii) three ways to obtain request, response, and session in Struts2

; Private HttpServletRequest Requset = Servletactioncontext.getrequest (); It is wrong to place this statement in this position, and it is also wrong to put this statement in the constructor. Public String Login () { requset = Servletactioncontext.getrequest ();//Requset The acquisition must be implemented in a specific way user = new User (); User.setuid (UID); User.setpassword (password); if (userdao.islogin (user)) { requset.getsession

Directed web crawler

1 ImportRequests2 fromBs4ImportBeautifulSoup3 ImportBS44 5 #Crawl the contents of a directed Web page6 defgethtmltext (URL):7 Try:8r = requests.get (URL, timeout = 30)9 r.raise_for_status ()TenR.encoding =r.apparent_encoding One returnR.text A except: - Print('Error') - the - deffillunivlist (ulist, HTML): -Soup = BeautifulSoup (HTML,"Html.parser") - forTrinchSoup.find ('tbody'). Children:#traversing sub-tags under tbod

"Python crawler" crawls Chinese university rankings from HTML

From BS4 import BeautifulSoupImport requestsImport BS4 #bs4. Element.tag#获取网页页面HTMLdef gethtmltext (URL):Tryr = requests.request ("Get", url,timeout=30)R.raise_for_status () #如不是200报错r.encoding = r.apparent_encoding #猜测编码然后赋予给解码 encoding modeDemo = R.textSoup = BeautifulSoup (demo, "Html.parser") #做汤Return soupExceptReturn ""#分析并返回列表def fillunivlist (ulist,html):Soup = htmlfor TR in Soup.find ("Tbody"). Children: #从汤里找tbody标签的儿子遍历If Isinstance (tr,bs4

Python web crawler and Information extraction--5. Information organization and extraction method

methods:4. Chinese University Ranking crawler example #CrawUnivRankingB. py Import Requests From bs4 import beautifulsoup Import BS4 def gethtmltext (URL): try: r = requests.get (URL, timeout=+) r.raise_for_status () r.encoding = r.apparent_encoding return r.text except: return "" def fillunivlist (ulist, HTML): Soup = beautifulsoup (HTML, "Html.parser") for tr in soup.find (' tbody '). Children:

[Python3 Crawler from entry to Mastery] China big ... __python

#采用request-BS4 Route realizes Chinese University ranked Directional crawler # optimization of mixed-output problems in China and English import requests from BS4 import beautifulsoup import BS4 #import BS4 to use its Label type definition def gethtmltext (URL): try:r = requests.get (URL, timeout =) # print (R.status_code) 200 is normal, all other information is incorrect R.raise_for_status () r.encoding = r.apparent_encoding return r.text except:return ' Get Faile D. ' def fillunivlist (

Struts2 's Actioncontext && servletactioncontext

achieved in a specific way user=newuser (); user.setuid (UID); user.setpassword (password); if (userdao.islogin (user)) { req.getsessiOn (). setattribute ("user", user); returnSUCCESS; } return LOGIN; NBSP;NBSP;NBSP;NBSP} publicstringqueryall () { req=servletactioncontext.getrequest () the acquisition of //req must be achieved in a specific method ulist=userdao.queryall (); req.getsession (). setattribute ("Ulis

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