1.取出一个新闻列表页的全部新闻 包装成函数。

2.获取总的新闻篇数，算出新闻总页数。

3.获取全部新闻列表页的全部新闻详情。

1 import requests 2 from bs4 import BeautifulSoup 3 from datetime import datetime 4 import re 5 # res = requests.get('http://news.gzcc.cn/html/xiaoyuanxinwen/') 6 # res.encoding = 'utf-8' 7 # soup = BeautifulSoup(res.text, 'html.parser') 8  9 10 # 获取新闻点击次数11 def getNewsId(url):12     #使用正则表达式获得新闻编号13     newsId = re.findall(r'\_(.*).html', url)[0][-4:]14     #生成点击次数的Request URL15     clickUrl = 'http://oa.gzcc.cn/api.php?op=count&id={}&modelid=80'.format(newsId)16     clickRes = requests.get(clickUrl)17     # 利用正则表达式获取新闻点击次数18     clickCount = int(re.search("hits'\).html\('(.*)'\);", clickRes.text).group(1))19     return clickCount20 21 22 23 def getNewDetail(newsurl):24     # 读取新闻详情25     resDescript = requests.get(newsurl)26     resDescript.encoding = "utf-8"27     soupDescript = BeautifulSoup(resDescript.text, 'html.parser')28     title = soupDescript.select('.show-title')[0].text29     info = soupDescript.select('.show-info')[0].text30     if (info.find('作者') > 0):31         author = re.search('作者：((.{2,20}\s|.{2,20}、|.{2,20}，){1,5})', info).group(1)32     else:33         author = 'none'34     if (info.find('审核') > 0):35         right = re.search('审核：((.{2,20}\s|.{2,20}、|.{2,20}，){1,5})', info).group(1)36     else:37         right = 'none'38     if (info.find('来源') > 0):39         source = re.search('来源：((.{2,50}\s|.{2,50}、|.{2,50}，){1,5})', info).group(1)40     else:41         source = 'none'42     if (info.find('摄影') > 0):43         video = re.search('摄影：((.{2,50}\s|.{2,50}、|.{2,50}，){1,5})', info).group(1)44     else:45         video = 'none'46     # author = re.search('作者：((.{2,20}\s|.{2,20}、|.{2,20}，){1,5})', info).group(1)47     # right = re.search('审核：(.*)\xa0\xa0来源：', info).group(1)48     # source = re.search('来源：(.*)\xa0\xa0\xa0\xa0摄影：', info).group(1)49     # video = re.search('摄影：(.*)\xa0\xa0\xa0\xa0点击：', info).group(1)50     dt = datetime.strptime(info.lstrip('发布时间:')[0:19],'%Y-%m-%d %H:%M:%S')51     content = soupDescript.select('.show-content')[0].text.strip()52     click = getNewsId(newsurl)53     # print(click,title,newsurl,source,dt)54     print('发布时间：{0}\n作者：{1}\n审核：{2}\n来源：{3}\n摄影：{4}\n点击次数：{5}'.format(dt, author, right, source, video, click))55 56 def getListPage(listPageUrl):57     res1 = requests.get(listPageUrl)58     res1.encoding = 'utf-8'59     soup = BeautifulSoup(res1.text,'html.parser')60     for news in soup.select('li'):61         if len(news.select('.news-list-title'))>0:62             a = news.select('a')[0].attrs['href']63             getNewDetail(a)64 65 resn = requests.get('http://news.gzcc.cn/html/xiaoyuanxinwen/')66 resn.encoding = 'utf-8'67 soupn = BeautifulSoup(resn.text,'html.parser')68 #新闻总篇数69 listcount = int(soupn.select('.a1')[0].text.rstrip('条'))70 print(listcount)71 #新闻总页数72 n = int(soupn.select('.a1')[0].text.rstrip('条'))//10+173 74 #首页75 # getListPage('http://news.gzcc.cn/html/xiaoyuanxinwen/')76 77 #最后一页78 for i in range(n,n+1):79     pageUrl = 'http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html'.format(i)80     getListPage(pageUrl)

 

 

4.找一个自己感兴趣的主题，进行数据爬取，并进行分词分析。（爬取腾讯体育-NBA）

1 import requests 2 from bs4 import BeautifulSoup 3 import re 4 import jieba 5  6  7 def getnewsdetail(newsurl): 8     resDescript = requests.get(newsurl) 9     resDescript.encoding = "utf-8"10     soupDescript = BeautifulSoup(resDescript.text, 'html.parser')11     content = soupDescript.select('.text')[0].text.strip()12     words = jieba.lcut(content)13     wcdict = {}14     for i in set(words):15         wcdict[i] = words.count(i)16         delete = {
   '你', '我', '他', '都', '已经', '着', '不', '她', '没有', '和', '他们', '中', '下', '什么', '一个',17                   '道', '的', '们', '所', '在', '来', '有', '过', '从', '而', '才', '要', '因', '为', '地', '将', '上', '共', '自', '是',18                   '令', '但', '被', '就', '也', '说', '语', '呀', '啊',  '个', '人', '里', '罢', '内', '该', '与', '会', '对', '去',19                   '出', '动', '却', '超', '已', '只', '放', '这', '比', '还', '则', '见', '到', '最', '话', '加', '更', '并', '把',20                   '儿', '大', '小', '那', ' ', '了', '-', '\n', '，', '。', '？', '！', '“', '”', '：', '；', '、', '.', '‘', '’'}21     for i in delete:22         if i in wcdict:23             del wcdict[i]24     sort_word = sorted(wcdict.items(), key=lambda d: d[1], reverse=True)  # 排序25     for i in range(20):  # 输出26         print(sort_word[i])27 28 29 def getnewslist(newsurl):30     res = requests.get(newsurl)31     res.encoding = 'gbk'32     soup = BeautifulSoup(res.text, 'html.parser')33     for newsList in soup.select('.list01')[0].select('li'):34         title = newsList.select('a')[0].text35         newsurl = newsList.select('a')[0]['href']36         print('\n标题：{0}\n新闻链接:{1}\n'.format(title, newsurl))37         getnewsdetail(newsurl)38 39 40 url = "http://sports.qq.com/l/basket/original/qqinterview/list20150821155646.htm"41 resn = requests.get(url)42 resn.encoding = 'utf-8'43 soupn = BeautifulSoup(resn.text,'html.parser')44 getnewslist(url)45 46 for i in range(1, 30):47     if (i == 1):48         getnewslist(url)49     else:50         newsurl = "http://sports.qq.com/l/basket/original/qqinterview/list20150821155646_{}.htm".format(i)51         getnewslist(newsurl)