标签：广州 邮箱 datetime 发布 sele imp sts int n+1
学会使用正则表达式
import requests import re from bs4 import BeautifulSoup from datetime import datetime newsUrl = ‘http://news.gzcc.cn/html/2017/xiaoyuanxinwen_095/8249.html‘
1. 用正则表达式判定邮箱是否输入正确。
import re
r =‘^(\w)+(\.\w+)*@(\w)+((\.\w{2,3}){1,3})$‘
e =‘1546122489@qq.com‘
if re.match(r,e):
print(re.match(r,e).group(0))
else:
print(‘error‘)
2. 用正则表达式识别出全部电话号码。
import re
str =‘‘‘020-82876130 版权所有：广州商学院 地址：广州市黄埔区九龙大道206号
学校办公室：020-82876130 招生电话：020-82872773
校外办公室0724-4263864 粤公网安备 44011602000060号 粤ICP备15103669号
‘‘‘
number=re.findall(‘(\d{3,4})-(\d{6,8})‘,str)
print(number)
3. 用正则表达式进行英文分词。re.split(‘‘,news)
import re news = ‘‘‘Failure is probably the fortification in your pole. It is like a peek your wallet as the thief, when you are thinking how to spend several hard-won lepta, when you are wondering whether new money, it has laid background.‘‘‘ word = re.split(‘[\s,.?\-]+‘,news) print(word)
4. 使用正则表达式取得新闻编号
import re newsUrl = ‘http://news.gzcc.cn/html/2017/xiaoyuanxinwen_095/8249.html‘ num=re.search(‘\_(.*).html‘,newsUrl).group(1) print(num)
5. 生成点击次数的Request URL
import re newsUrl = ‘http://news.gzcc.cn/html/2017/xiaoyuanxinwen_095/8249.html‘ newsId = re.search(‘\_(.*).html‘, newsUrl).group(1).split(‘/‘)[-1] res = ‘http://oa.gzcc.cn/api.php?op=count&id=8249&modelid=80‘.format(newsId) print(res)
6. 获取点击次数
import requests
import re
newsUrl = ‘http://news.gzcc.cn/html/2017/xiaoyuanxinwen_095/8249.html‘
newsId=re.search(‘\_(.*).html‘, newsUrl).group(1).split(‘/‘)[-1]
res = requests.get(‘http://oa.gzcc.cn/api.php?op=count&id=8249&modelid=80‘.format(newsId))
ClickCount=(int(res.text.split(‘.html‘)[-1].lstrip("(‘)").rstrip("‘);")))
print(ClickCount)
7. 将456步骤定义成一个函数 def getClickCount(newsUrl):
def getClickCount(newsUrl):
newsId=re.search(‘\_(.*).html‘, newsUrl).group(1).split(‘/‘)[-1]
res = requests.get(‘http://oa.gzcc.cn/api.php?op=count&id=8249&modelid=80‘.format(newsId))
ClickCount = (int(res.text.split(‘.html‘)[-1].lstrip("(‘)").rstrip("‘);")))
return ClickCount
8. 将获取新闻详情的代码定义成一个函数 def getNewDetail(newsUrl):
def getNewsDetail(newsUrl):
resd = requests.get(newsUrl)
resd.encoding = ‘utf-8‘
soupd = BeautifulSoup(resd.text, ‘html.parser‘) # 打开新闻详情页
title = soupd.select(‘.show-title‘)[0].text
info = soupd.select(‘.show-info‘)[0].text
# c = soupd.select(‘#content‘)[0].text # 正文
dt = info.lstrip(‘发布时间:‘)[:19] # 发布时间
dati = datetime.strptime(dt, ‘%Y-%m-%d %H:%M:%S‘)
if info.find(‘作者：‘) > 0:
source = info[info.find(‘作者：‘):].split()[0].lstrip(‘作者：‘) # 作者
else:
source = ‘none‘
content = soupd.select(‘.show-content‘)[0].text.strip()
click = getClickCount(newsUrl)
print(dati, title, newsUrl, source, click)
9. 取出一个新闻列表页的全部新闻 包装成函数def getListPage(pageUrl):
def getListPage(pageUrl):
res = requests.get(pageUrl)
res.encoding = ‘utf-8‘
soup = BeautifulSoup(res.text,‘html.parser‘)
for news in soup.select(‘li‘):
if len(news.select(‘.news-list-title‘)) > 0:
newsUrl = news.select(‘a‘)[0].attrs[‘href‘] # 链接
getNewsDetail(newsUrl)
10. 获取总的新闻篇数，算出新闻总页数包装成函数def getPageN():
def getPageN():
res = requests.get(‘http://news.gzcc.cn/html/xiaoyuanxinwen/‘)
res.encoding = ‘utf-8‘
soup = BeautifulSoup(res.text, ‘html.parser‘)
pagenumber=int(soup.select(‘.a1‘)[0].text.rstrip(‘条‘))
page = int(soup.select(‘.a1‘)[0].text.rstrip(‘条‘))//10+1
return page
11. 获取全部新闻列表页的全部新闻详情。
n=getPageN()
for i in range(1,n+1):
pageUrl = ‘http://news.gzcc.cn/html/xiaoyuanxinwen/‘
getListPage(pageUrl)
标签：广州 邮箱 datetime 发布 sele imp sts int n+1
原文地址：https://www.cnblogs.com/yjxblog/p/8780579.html
