https://www.cnblogs.com/xiaoxi-3-/p/9029065.html

python-入门的第一个爬虫例子

 

提取出豆瓣电影-正在上映电影名称、评分、图片的信息，提取的站点 URL 为：https://movie.douban.com/cinema/nowplaying/beijing/，提取的结果我们以文件形式保存下来。

 

pip3 install requests

# -*- coding: utf-8 -*-
# @Time    : 2018/5/12 上午11:37
# @Author  : xiaoxi
# @File    : test.py
import json
import re
import requests
from requests import RequestException

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

def parse_page(html):
    pattern = re.compile('<li.*?list-item.*?data-title="(.*?)".*?data-score="(.*?)".*?>.*?<img.*?src="(.*?)".*?/>', re.S)
    items = re.findall(pattern, html)
    for item in items:
        yield{
            'title': item[0],
            'score': item[1],
            'image': item[2],
        }

def write_to_file(content):
    with open('xiaoxi.txt', 'a', encoding='utf-8')as f:
        # print(type(json.dumps(content)))
        f.write(json.dumps(content,ensure_ascii=False))

def main():
    url = "https://movie.douban.com/cinema/nowplaying/beijing/"
    html = get_page(url)
    for item in parse_page(html):
        print(item)
        write_to_file(item)

if __name__ == '__main__':
    main()