2019/10/5 最新头条爬虫代码---亲测有效

import requestsfrom urllib.parse import urlencode# requests内置的状态码，可判断url响应是否正确from requests import codesimport osfrom hashlib import md5from multiprocessing.pool import Poolimport reimport jsonimport bs4def get_page(offset):    # 必须的头请求头信息    headers = {        ‘cookie‘: ‘tt_webid=6667396596445660679; csrftoken=3a212e0c06e7821650315a4fecf47ac9; tt_webid=6667396596445660679; WEATHER_CITY=%E5%8C%97%E4%BA%AC; UM_distinctid=16b846003e03d7-0dd00a2eb5ea11-353166-1fa400-16b846003e1566; CNZZDATA1259612802=2077267981-1561291030-https%253A%252F%252Fwww.baidu.com%252F%7C1561361230; __tasessionId=4vm71cznd1561363013083; sso_uid_tt=47d6f9788277e4e071f3825a3c36a294; toutiao_sso_user=e02fd616c83dff880adda691cd201aaa; login_flag=6859a0b8ffdb01687b00fe96bbeeba6e; sessionid=21f852358a845d783bdbe1236c9b385b; uid_tt=d40499ec45187c2d411cb7bf656330730d8c15a783bb6284da0f73104cd300a2; sid_tt=21f852358a845d783bdbe1236c9b385b; sid_guard="21f852358a845d783bdbe1236c9b385b|1561363028|15552000|Sat\054 21-Dec-2019 07:57:08 GMT"; s_v_web_id=6f40e192e0bdeb62ff50fca2bcdf2944‘,        ‘user-agent‘: ‘Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Safari/537.36‘,        ‘x-requested-with‘: ‘XMLHttpRequest‘,        ‘referer‘: ‘https://www.toutiao.com/search/?keyword=%E8%A1%97%E6%8B%8D‘,    }    # 获得的真是url必须的参数构造    params = {        ‘aid‘: ‘24‘,        ‘app_name‘: ‘web_search‘,        ‘offset‘: offset,        ‘format‘: ‘json‘,        ‘keyword‘: ‘街拍‘,        ‘autoload‘: ‘true‘,        ‘count‘: ‘20‘,        ‘en_qc‘: ‘1‘,        ‘cur_tab‘: ‘1‘,        ‘from‘: ‘search_tab‘,        ‘pd‘: ‘synthesis‘,    }    # 真实url的起始url    base_url = ‘https://www.toutiao.com/api/search/content/?‘    # python内置库解码后的真实url    url = base_url + urlencode(params)    try:        resp = requests.get(url, headers=headers)        # 是正确的响应，即200        if 200 == resp.status_code:            return resp.json()        else:            return None    except requests.ConnectionError:        print("请求索引页面错误！")        return Nonedef get_images(json):    # 街拍的总数据    if json.get(‘data‘):        data = json.get(‘data‘)        for item in data:            if item.get(‘title‘) is None:                continue            title = re.sub(‘[\t]‘, ‘‘, item.get(‘title‘))            images = item.get(‘image_list‘)            for image in images:                # 修复了url更改导致了爬取到的部分是小图的问题                for each in image.get(‘url‘):                    if each == ‘x‘:                        origin_image = re.sub("list/190x124", "large", image.get(‘url‘))                        break                    else:                        origin_image = re.sub("list", "large", image.get(‘url‘))                yield {                    ‘image‘: origin_image,                    ‘title‘: title                }

def save_image(item):    if not os.path.exists(item.get(‘title‘)):        os.mkdir(item.get(‘title‘))    try:        response = requests.get(item.get(‘image‘))        if response.status_code == 200:            file_path = ‘{0}/{1}.{2}‘.format(item.get(‘title‘), md5(response.content).hexdigest(), ‘jpg‘)            if not os.path.exists(file_path):                with open(file_path, ‘wb‘) as f:                    f.write(response.content)            else:                print(‘Already Downloaded‘, file_path)    except requests.ConnectionError:        print(‘Failed to Save Image‘)

def main(offset):    # 以什么倍数来增长    json = get_page(offset)    print(json)    for item in get_images(json):        print(item)        save_image(item)

GROUP_START = 0GROUP_END = 20

if __name__ == ‘__main__‘:    pool = Pool()    groups = ([x * 20 for x in range(GROUP_START, GROUP_END + 1)])    pool.map(main, groups)    pool.close()    pool.join()

原文地址：https://www.cnblogs.com/gglll/p/11625386.html