Python_day18--爬取猫眼网TOP-100

import json
import requests
import re
from requests.exceptions import RequestException
#请求单页
def get_one_page(url):
    try:
        headers = {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.79 Safari/537.36'
        }
        response = requests.get(url,headers=headers)
        if response.status_code == 200:
            return response.text
        return None
    except RequestException:
        return None


#解析页面
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)
    print(items)
    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 main(offset):
    url = 'https://maoyan.com/board/4?offset='+str(offset)
    html = get_one_page(url)
    htmls=parse_one_page(html)
    for item in htmls:
        print(item)
        wirte_to_file(item) #写入文件


#写到文件中
def wirte_to_file(content):
    with open('TOP100.txt','a') as f:
        f.write(json.dumps(content)+'\n')
        f.close()


#开始调用
if __name__ =='__main__':
    #普通方式
    for item in range(10):
        main(str(item*10))