DataWhale 爬虫 Task1 2019-04-06

# -*- coding: utf-8 -*-
# @Time    : 2019/4/4 22:40
# @Author  : zxx
# @File    : req_demo.py

import requests
import re
from bs4 import BeautifulSoup


def request_get_baidu():
    """
    对百度做一次get请求获得网页端所有数据
    :return: null
    """
    headers = {
        'Accept': ' text/html,application/xhtml+xml,appl'
                  'ication/xml;q=0.9,image/webp,image/apng,'
                  '*/*;q=0.8,application/signed-exchange;v=b3',
        'Accept-Encoding': ' gzip, deflate, br',
        'Accept-Language': ' zh-CN,zh;q=0.9',
        'Cache-Control': ' max-age=0',
        'Connection': ' keep-alive',
        'Cookie': ' BAIDUID=47CD46147CEDF76D63462C3F756C55A'
                  'D:FG=1; ZD_ENTRY=bing; pgv_pvi=9934791680;'
                  ' pgv_si=s4201997312; cflag=13%3A3; BDUSS=k'
                  'FNNTcxdmdsN3lJREVJQXU0dEFjWHZFQUdZSDBjekNLV'
                  'WJOWDVYSFBCRllFY3hjQVFBQUFBJCQAAAAAAAAAAAEAA'
                  'AAIrrlXsaG6ybH9uMlBAAAAAAAAAAAAAAAAAAAAAAAAAA'
                  'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'
                  'AAFiEpFxYhKRcZ; BIDUPSID=47CD46147CEDF76D6346'
                  '2C3F756C55AD; PSTM=1554457103; BD_HOME=1; H_P'
                  'S_PSSID=26522_1432_21106_28774_28721_28558_28'
                  '584_28640_26350_28604_28625_22160; BD_UPN=1231'
                  '4753; sug=3; sugstore=0; ORIGIN=0; bdime=0',
        'Host': ' www.baidu.com',
        'Upgrade-Insecure-Requests': ' 1',
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win6'
                      '4; x64) AppleWebKit/537.36 (KHTML, l'
                      'ike Gecko) Chrome/73.0.3683.86 Safar'
                      'i/537.36'
    }
    resposne = requests.get('http://www.baidu.com', headers=headers)
    status_code = resposne.status_code
    print('状态码' + str(status_code))
    print(resposne.text)


# 爬取豆瓣top250
def get_top250_list_page(url: str, headers: dict):
    """
    输入链接获得网页文本数据
    :param url: 豆瓣top250列表页网页链接
    :param headers: user-agent等http浏览的header信息
    :return: 获得网页返回网页文本，未获得返回空值
    """
    response = requests.get(url, headers=headers)
    if response.status_code == 200:
        html = response.text
        # print(html)
        return html
    else:
        return None


# 解析获得电影列表页
def parse_top250_list_page(html: str):
    """
    解析获得的网页文本数据，打印得到的电影信息
    :param 
        html: str
    :return: 
        url：nextpage的链接
    """
    soup = BeautifulSoup(html, features="html.parser")
    # print(soup.prettify())
    this_page = soup.find('div', attrs='paginator').find('span', attrs='thispage').get_text()
    next_page_start = str(int(this_page) * 25)
    next_page_url = "https://movie.douban.com/top250?start={}&filter=".format(next_page_start)
    # print(next_page_url)
    for list in soup.find('ol').find_all('li'):
        try:
            rank = list.find('em').string
            print('名次: ' + rank)
            href = list.find('div', attrs={'class': 'hd'}).find('a')['href']
            print("详情页: " + href)
            name = list.find('span', 'title').string
            print('电影名: ' + name)
            # director_name = list.find(re.compile('导演:'.re.S)).string
            # print('导演: '+director_name)
            # content = str(list.find('div', 'bd').find('p'))
            content = list.find('div', attrs={'class': 'bd'}).find('p').get_text()
            # print(type(content))
            # print(content)
            director = content.split("   ")[0].lstrip()
            print(director)
            actor = content.split("   ")[1].split("\n")[0]
            print(actor)
            year = content.split("   ")[1].split("\n")[1].split(" / ")[0].lstrip()
            print(year)
            contry = content.split("   ")[1].split("\n")[1].split(" / ")[1]
            print(contry)
            movieclass = content.split("   ")[1].split("\n")[1].split(" / ")[2]
            print(movieclass)
            print('---------------------------------------------------------------')
            # messages_pattern = re.compile('导演: (.*?) 主演: (.*?).*?([0-9]{4})', re.S)
            # messages_pattern = re.compile('导演: (.*?) .*?主演: (.*?)
.*([0-9]{4})/', re.S)
            # messages = re.findall(messages_pattern, content)
            # print(messages)
            # director = messages[0]
            # print(director)
            # print('导演: '+director)
            # actor = messages[1]
            # print('主演: '+actor)
            # year = messages[2]
            # print('导演： %s,主演: %s,年份: %s' % (director, actor, year))
        except Exception:
            print("艹了")

    return next_page_url


def main():
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win6'
                      '4; x64) AppleWebKit/537.36 (KHTML, l'
                      'ike Gecko) Chrome/73.0.3683.86 Safar'
                      'i/537.36'
    }
    url = "https://movie.douban.com/top250"
    # request_get_baidu()
    # html = get_top250_list_page(url, headers)
    # next_page_url = parse_top250_list_page(html)
    while url != "https://movie.douban.com/top250?start=225&filter=":
        html = get_top250_list_page(url, headers)
        url = parse_top250_list_page(html)


if __name__ == '__main__':
    main()