标签:n+1 ref else 对象 方法 frame 数据 sls 内容
1. 将新闻的正文内容保存到文本文件。
def file(content):
f = open(‘news.txt‘,‘a‘,encoding=‘utf-8‘)
f.write(content)
f.close()
2. 将新闻数据结构化为字典的列表:
import requests
from bs4 import BeautifulSoup
import datetime
import re
import pandas
def getClickCount(newUrl):
re1 = re.search(‘\_(.*).html‘,newUrl)
re2 = re.match(‘http://news.gzcc.cn/html/2018/xiaoyuanxinwen_(.*).html‘,newUrl)
i = re1.group(1).split(‘/‘)[-1]
cUrl = ‘http://oa.gzcc.cn/api.php?op=count&id={}&modelid=80‘.format(i)
res = requests.get(cUrl)
res2 = int(res.text.split(".html")[-1].lstrip("(‘").rstrip("‘);"))
return(res2)
def file(content):
f = open(‘news.txt‘,‘a‘,encoding=‘utf-8‘)
f.write(content)
f.close()
def getInformation(a1):
res1 = requests.get(a1)
res1.encoding = ‘utf-8‘
soup1 = BeautifulSoup(res1.text, ‘html.parser‘)
new = {}
new[‘title‘] = soup1.select(".show-title")[0].text
#new[‘content‘] = soup1.select("#content")[0].text
#file(new[‘content‘])
about = soup1.select(‘.show-info‘)[0].text
time = about.lstrip(‘发布时间:‘)[:19]
new[‘time‘] = datetime.datetime.strptime(time, ‘%Y-%m-%d %H:%M:%S‘)
if about.find(‘来源:‘) > 0:
new[‘origin‘] = about[about.find(‘来源:‘):].split()[0].lstrip("来源:")
else:
new[‘origin‘] = "未知"
if about.find(‘作者:‘) > 0:
new[‘writer‘] = about[about.find(‘作者:‘):].split()[0].lstrip("作者:")
else:
new[‘writer‘] = "佚名"
if about.find(‘审核:‘) > 0:
new[‘audit‘] = about[about.find(‘审核:‘):].split()[0].lstrip("审核:")
else:
new[‘audit‘] = "佚名"
if about.find(‘摄影:‘) > 0:
new[‘photograph‘] = about[about.find(‘摄影:‘):].split()[0].lstrip("摄影:")
else:
new[‘photograph‘] = "佚名"
new[‘url‘] = a1
new[‘count‘] = getClickCount(a1)
return(new)
def getnewslist(url):
resurl = requests.get(url)
resurl.encoding = ‘utf-8‘
soup = BeautifulSoup(resurl.text, ‘html.parser‘)
a = soup.select(‘li‘)
list = []
for news in a:
if len(news.select(‘.news-list-title‘)) > 0:
a1 = news.select(‘a‘)[0].attrs[‘href‘]
list.append(getInformation(a1))
return (list)
def getPage(url):
res = requests.get(url)
res.encoding = ‘utf-8‘
soup = BeautifulSoup(res.text,‘html.parser‘)
n = int(soup.select(‘.a1‘)[0].text.rstrip(‘条‘))//10+1
return(n)
url = "http://news.gzcc.cn/html/xiaoyuanxinwen/"
newTotal = []
newTotal.extend(getnewslist(url))
n = getPage(url)
print(n)
for i in range(n,n+1):
urls = "http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html".format(i)
newTotal.extend(getnewslist(urls))
3. 安装pandas,用pandas.DataFrame(newstotal),创建一个DataFrame对象df.
4. 通过df将提取的数据保存到csv或excel 文件。
dt = pandas.DataFrame(newTotal)
dt.to_excel(‘new.xlsx‘)
5. 用pandas提供的函数和方法进行数据分析:
print(dt.head(6)) print(dt[(dt[‘count‘] > 700)&(dt[‘origin‘]==‘学校综合办‘)]) sou = [‘国际学院‘, ‘学生工作处‘] print(dt[dt[‘origin‘].isin(sou)])
标签:n+1 ref else 对象 方法 frame 数据 sls 内容
原文地址:https://www.cnblogs.com/hano/p/8855031.html