python正则表达式——爬取网络小说实例

Posted 2021-03-11 田智凯

Python 正则表达式 菜鸟教程已经讲的很详细了，这里给出实例：

爬取斗破苍穹http://www.doupoxs.com/doupocangqiong/1.html

运行截图:

 

源代码：

import requests
import re
import time

headers = {
    \'User-Agent\':\'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36\'
}

f = open(\'D:/doupo.txt\',\'a+\')#新建txt文档，追加的方式

def get_info(url):
    res = requests.get(url,headers=headers)
    if res.status_code == 200:#判断请求吗是否为200
        contents = re.findall(\'<p>(.*?)</p>\',res.content.decode(\'utf-8\'),re.S)
        for content in contents:
            f.write(content+\'\\n\')#正则获取数据写入txt文件
    else:
        pass  #不为200就pass

if __name__ == \'__main__\':
    urls = [\'http://www.doupoxs.com/doupocangqiong/{}.html\'.format(str(i)) for i in range(2,100)]
    for url in urls:
        get_info(url)
        time.sleep(1)
    f.close()