爬虫作业
import requests for i in range (20): print("第",i+1,"次访问") r=requests.get("https://www.google.cn/") r.encoding='utf-8' print("返回状态:",r.status_code) print(r.text) print("text属性长度:",len(r.text)) print("content属性长度:",len(r.content))
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <h1>欢迎您的加入123</h1> <p>有你想不到的意外哦!</p> </body> <table border="1"> <tr> <td>班级</td> <td>19统计</td> </tr> <tr> <td>学号</td> <td>15</td> </tr> </table> </html>
import requests from bs4 import BeautifulSoup allUniv = [] def getHTMLText(url): try: r = requests.get(url, timeout=30) r.raise_for_status() r.encoding = 'utf-8' return r.text except: return "" def fillUnivList(soup): data = soup.find_all('tr') for tr in data: ltd = tr.find_all('td') if len(ltd)==0: continue singleUniv = [] for td in ltd: singleUniv.append(td.string) allUniv.append(singleUniv) def printUnivList(num): print("{1:^2}{2:{0}^10}{3:{0}^6}{4:{0}^4}{5:{0}^10}".format(chr(12288),"排名","学校名称","省市","总分","年费")) for i in range(num): u=allUniv[i] print("{1:^4}{2:{0}^10}{3:{0}^5}{4:{0}^8.1f}{5:{0}^11}".format(chr(12288),u[0],u[1],u[2],eval(u[3]),u[11])) def main(): url = 'http://www.zuihaodaxue.com/zuihaodaxuepaiming2018.html' html = getHTMLText(url) soup = BeautifulSoup(html, "html.parser") fillUnivList(soup) printUnivList(10) main()