画图显示：
import jieba
from wordcloud import WordCloud
import matplotlib.pyplot as plt
txt = open("zuihou.txt","r",encoding=‘utf-8‘).read()
wordlist = jieba.lcut(txt)
wl_split=" ".join(wordlist)
mywc = WordCloud().generate(wl_split)
plt.imshow(mywc)
plt.axis("off")
plt.show()
用requests库和BeautifulSoup4库，爬取校园新闻列表的时间、标题、链接、来源、详细内容
爬虫，网页信息
import requests
from bs4 import BeautifulSoup
gzccurl = ‘http://news.gzcc.cn/html/xiaoyuanxinwen/‘
res = requests.get(gzccurl)
res.encoding = ‘utf-8‘
soup = BeautifulSoup(res.text,‘html.parser‘)
for news in soup.select(‘li‘):
if len(news.select(‘.news-list-title‘))>0:
title = news.select(‘.news-list-title‘)[0].text
url = news.select(‘a‘)[0][‘href‘]
print(title,url)
将取得详细内容的代码包装成函数。
import requests
from bs4 import BeautifulSoup
from datetime import datetime
gzccurl = ‘http://news.gzcc.cn/html/xiaoyuanxinwen/‘
res = requests.get(gzccurl)
res.encoding = ‘utf-8‘
soup = BeautifulSoup(res.text,‘html.parser‘)
def getdetail(url):
resd = requests.get(url)
resd.encoding= ‘utf-8‘
soupd = BeautifulSoup(resd.text,‘html.parser‘)
return(soupd.select(‘.show-content‘)[0].text)
for news in soup.select(‘li‘):
if len(news.select(‘.news-list-title‘))>0:
title = news.select(‘.news-list-title‘)[0].text
url = news.select(‘a‘)[0][‘href‘]
time = news.select(‘.news-list-info‘)[0].contents[0].text
dt = datetime.strptime(time,‘%Y-%m-%d‘)
source = news.select(‘.news-list-info‘)[0].contents[1].text
detail = getdetail(url)
print(dt,title,url,source,detail)
requests库和BeautifulSoup4库爬取新闻列表
原文：http://www.cnblogs.com/junjun21/p/7608779.html