爬虫KS实战中，最后一行代码K.parms_start_url()要求定义self, 与视频不一样

Question

问题遇到的现象和发生背景

由于最后一行代码一直要求申明 self，所以代码改为了K.parms_start_url(self= K)
这一问题解决后运行又发现报错
（K这个object并没有start_url的参数）
原文：
AttributeError: type object 'KSchengdu_event' has no attribute 'start_url'

问题相关代码，请勿粘贴截图

    for page in range(3): # 模拟翻页场景，使用for循环
            response = requests.post(self.start_url, headers=self.headers, json=self.data)

运行结果及报错内容

Traceback (most recent call last):
  File "C:\Users\surface\PycharmProjects\爬虫程序\post实战，采集快手热门视频.py", line 60, in <module>
    k.parms_start_url(self=k)
  File "C:\Users\surface\PycharmProjects\爬虫程序\post实战，采集快手热门视频.py", line 28, in parms_start_url
    response = requests.post(self.start_url, headers=self.headers, json=self.data)
AttributeError: type object 'KSchengdu_event' has no attribute 'start_url'

我的解答思路和尝试过的方法

我尝试过将 init中self的参数删除移植到 parms_start_url中直接定义，但是报错

我全部代码：

import requests
import os # 创建对应的保存文件夹


class KSchengdu_event(object):
    os_path = os.getcwd() + '/成都活动视频/' #创建文件夹路径
    if not os.path.exists(os_path):
        os.mkdir(os_path)




    def __init__(self):
        self.start_url = 'https://www.kuaishou.com/graphql'
        self.headers = {
            'content - type': 'application / json',
            'Cookie': 'kpf=PC_WEB; kpn=KUAISHOU_VISION; clientid=3; did=web_e6ce240f9ecffb9dc0cc2d826821e185; client_key=65890b29; userId=2759025539; kuaishou.server.web_st=ChZrdWFpc2hvdS5zZXJ2ZXIud2ViLnN0EqABe0zRDaO8HRKHXIbzw_P8Exx_YU0eZlfbGRGBS4X4pNpZ4xrdcfTHsJTuF-7_tXotCED7iBV4PuxWQxLtHciHQoPOIbJrFwQQYSyqnpbZmjyTlwoIOggQuut-iTagJB7ct4N5K1MxU9SfXoaOzOo4i-6zY3HB0Fj1eLv3agyYheN3LKcLGzJncYDrcUwump29samxzJfTuuD1qRqzuKRGwRoS-1Rj5-IBBNoxoIePYcxZFs4oIiDrpN2yGP1gXQvUJTQ-bFSIAdBNCsRqskqFDVw2LI50tSgFMAE; kuaishou.server.web_ph=4dcd55ac36f14b144915a410d1b3b4e7b559',
            'Host': 'www.kuaishou.com',
            'Origin': 'https: // www.kuaishou.com',
            'Referer': 'https://www.kuaishou.com/search/video?searchKey=%E6%88%90%E9%83%BD%E6%B4%BB%E5%8A%A8',
            'User - Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36'
        }
        self.data = {"operationName":"visionSearchPhoto","variables":{"keyword":"成都活动","pcursor":"1","page":"search","searchSessionId":"MTRfMjc1OTAyNTUzOV8xNjQ1Mzc1NzI1MTUwX-aIkOmDvea0u-WKqF82MDU4"},"query":"query visionSearchPhoto($keyword: String, $pcursor: String, $searchSessionId: String, $page: String, $webPageArea: String) {\n  visionSearchPhoto(keyword: $keyword, pcursor: $pcursor, searchSessionId: $searchSessionId, page: $page, webPageArea: $webPageArea) {\n    result\n    llsid\n    webPageArea\n    feeds {\n      type\n      author {\n        id\n        name\n        following\n        headerUrl\n        headerUrls {\n          cdn\n          url\n          __typename\n        }\n        __typename\n      }\n      tags {\n        type\n        name\n        __typename\n      }\n      photo {\n        id\n        duration\n        caption\n        likeCount\n        realLikeCount\n        coverUrl\n        photoUrl\n        liked\n        timestamp\n        expTag\n        coverUrls {\n          cdn\n          url\n          __typename\n        }\n        photoUrls {\n          cdn\n          url\n          __typename\n        }\n        animatedCoverUrl\n        stereoType\n        videoRatio\n        __typename\n      }\n      canAddComment\n      currentPcursor\n      llsid\n      status\n      __typename\n    }\n    searchSessionId\n    pcursor\n    aladdinBanner {\n      imgUrl\n      link\n      __typename\n    }\n    __typename\n  }\n}\n"}


    def parms_start_url(self):

        for page in range(3): # 模拟翻页场景，使用for循环
            response = requests.post(self.start_url, headers=self.headers, json=self.data)
            # 将同类方法中数据传输需要加上self.
            self.parms_response_data(response)

    def parms_response_data(self, response):
        # 将数据改为json模式
        json_data = response.json()
        # 数据提取
        data_list = json_data['data']['visionSearchPhoto']['feeds']
        # for 循环遍历大列表
        for data_dict in data_list:
            # 处理按照喜欢收集数据
            likes = int(data_dict['photo']['realLikeCount'])
            if likes > 10000:

                title = data_dict['photo']['caption']
                # 获取视频链接
                video = data_dict['photo']['photoUrl']
                # 发送请求，获取视频的字节流数据
                data = requests.get(video).content

                self.parms_save_data(title, data)


    def parms_save_data(self, title, data):
        with open(self.os_path + title + '.mp4' + 'wb') as f:
            f.write(data)
        print(f"{title}---------采集OK")


if __name__ == '__main__':
    k = KSchengdu_event
    k.parms_start_url(self=k)

Answer 1

将类实例化的时候,类名后面要带括号
形如

if __name__ == '__main__':
    k = KSchengdu_event()
    k.parms_start_url()

self是类方法被调用时自动传入的隐藏参数,不需要你自己写.
有帮助望采纳~