小白学python－实战－爬取猫眼电影信息

这次我们来学习爬去猫眼电影前100名的电影

１．首先我们打开猫眼电影top100的网页:http://maoyan.com/board/4?

我们发现有offset=页数,来进行翻页

２．我们打开pycham编程软件,我们创建一个项目，然后新建一个文件sprider.py

import requests
from requests.exceptions import RequestException
import re
import json
#多线程,一秒完成数据的爬取
from multiprocessing import Pool

def get_one_page(url):
    try:
        response = requests.get(url)
        if response.status_code == 200:
            return response.text
        return None
    except RequestException:
        return None

def parse_one_page(html):
    pattern = re.compile('
.*?board-index.*?>(\d+).*?data-src="(.*?)".*?name">(.*?).*?star">(.*?)
.*?releasetime">(.*?)
'
                         +'.*?integer">(.*?).*?fraction">(.*?).*?
',re.S)
    items = re.findall(pattern,html)
    for item in items:
        yield {
            'index': item[0],
            'image': item[1],
            'title': item[2],
            'actor': item[3].strip()[3:],
            'time': item[4].strip()[5:],
            'score': item[5]+item[6]
        }

def write_to_file(content):
    with open('result.txt','a',encoding='utf-8') as f:
        f.write(json.dumps(content,ensure_ascii=False)+'\n')
        f.close()


def main(offset):
    url = "http://maoyan.com/board/4?offset="+str(offset)
    html = get_one_page(url)
    for item in parse_one_page(html):
        print(item)
        write_to_file(item)

if __name__=='__main__':
    # for i in range(10):
    #     main(i*10)
    pool = Pool()
    pool.map(main,[i*10 for i in range(10)])

3.然后运行我们的项目，如图所示:

4.我们把爬取的数据保存到文本中

     猫眼电影的top100就这样被爬取下来了: