Python学习--猫眼电影TOP100榜单抓取

import requests
import re
import json
import time

def get_one_page(url):
    headers={'User-Agent':'Mozilla/5.0(Macintosh;Intel Mac OS X 10_11_4) AppleWebKit/537.36(KHTML,like Geck) Chrome/52.0.2743.116 Safari/537.36'}
    response=requests.get(url,headers=headers)
    if response.status_code == 200:
        return response.text
    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 {
            '排列序号': item[0],
            '图片': item[1],
            '电影名': item[2],
            '演员': item[3].strip()[3:],
            '时间': item[4].strip()[5:],
            '成绩': item[5] + item[6]
        }

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

def main(offset):
    url='http://maoyan.com/board/4?offset='+str(offset)
    html=get_one_page(url)
    #print(html)
    for item in parse_one_page(html):
        print(item)
        write_to_file(item)
if __name__ == '__main__':
    for i in range(10):
        main(offset=i*10)
        time.sleep(1)