2019.10.09 猫眼电影爬虫

import json
from multiprocessing import Pool
import requests
import re
from requests.exceptions import RequestException


# 定义一个函数获取网页的内容
def get_one_page(url):
    try:
        headers = {
            'user-agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36'}
        # 尽量加上header:进入网页后右键检查,选择network,Ctrl+R后随便选一个文件即可获得header
        response = requests.get(url, headers=headers)
        if response.status_code == 200:
            return response.text
        # 判断是否正常获得网页内容
        return None
    except RequestsException:
        return None

# 定义一个函数获取我们想要的内容的文件,使用正则表达式
def parse_one_page(html):
    pattern = re.compile('
.*?board-index.*?>(\d+).*?data-src="(.*?)".*?movie-item-info.*?title="(.*?)".*?' + 'star">(.*?)

.*?releasetime">(.*?)

.*?score-num.*?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] } # 定义一个函数将文件写出 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() # 实现翻页功能 def main(offset): url = 'https://maoyan.com/board/4?offset=' + str(offset) html = get_one_page(url) parse_one_page(html) for item in parse_one_page(html): write_to_file(item) if __name__ == '__main__': pool = Pool() pool.map(main, [i * 10 for i in range(10)])

你可能感兴趣的:(2019.10.09 猫眼电影爬虫)