猫眼电影爬取

#!usr/bin/env python
#-*- encoding:utf-8 -*-
import requests
import re
from requests.exceptions import  RequestException
from flask import json
from multiprocessing import Pool
def get_one_page(url):
    header = {
        'user-agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36'
    }
    try:
        response = requests.get(url,headers = header)
        if response.status_code == 200:
            return response.text
        return None
    except RequestException:
        return None

def parse_one_page(html):
    pattern = re.compile('<dd>.*?board-index.*?>(\d+)</i>.*?data-src="(.*?)".*?name"><a.*?>(.*?)</a>.*?star">(.*?)</p>.*?releasetime">(.*?)</p>.*?integer">(.*?)</i>.*?fraction">(.*?)</i>.*?</dd>',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('E:/getdata/result.csv','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__':
    pool = Pool()
    pool.map(main,[i*10 for i in range(10)])