要求：
爬取網(wǎng)頁(yè)內(nèi)所有播放列表
今日股市（王斌）
老曹說(shuō)股
老丁說(shuō)股

import scrapy from scrapy import Request, signals import pandas as pd from album.items import AlbumItemclass ExampleSpider(scrapy.Spider):name = 'example'def __init__(self, **kwargs):super(ExampleSpider, self).__init__(**kwargs)self.data = list()self.totalpage = 2self.user = [{'albumId': 2881558,'albumN': '今日股市（王斌）'},{'albumId': 4282711,'albumN': '老曹說(shuō)股'},{'albumId': 4282711,'albumN': '老丁說(shuō)股'}]def start_requests(self):for uu in self.user:dic= uuself.logger.info(f'dic{dic}')dic['page']=1url = f"https://www.ximalaya.com/revision/album/v1/getTracksList?albumId={dic['albumId']}&pageNum=1"yield Request(url, callback=self.parse, cb_kwargs=dic)def parse(self, response,**kwargs):lst=response.json()["data"]["tracks"]if kwargs["page"]==1:self.totalpage =response.json()["data"]["pageSize"]elif kwargs['page']+1>self.totalpage :returnfor i in lst:id=i["trackId"]title=i["title"]name=kwargs["albumN"]item={"author": name,"title":title,}self.data.append(item)#減少函數(shù)耦合，范圍代替?zhèn)鲄?執(zhí)行第一頁(yè)的時(shí)候也可以執(zhí)行for k in range(2,self.totalpage):kwargs["page"]=kurl=f'https://www.ximalaya.com/revision/album/v1/getTracksList?albumId={kwargs["albumId"]}&pageNum={k}'yield Request(url=url, callback=self.parse, cb_kwargs=kwargs)@classmethoddef from_crawler(cls, crawler, *args, **kwargs):spider = cls(**kwargs)spider._set_crawler(crawler)crawler.signals.connect(spider.spider_closed, signal=signals.spider_closed)return spiderdef spider_closed(self, spider):print(f'self.data{self.data}')self.logger.info(f'一共 {len(self.data)} 條數(shù)據(jù)')output = '喜馬拉雅.xlsx'with pd.ExcelWriter(output) as writer:df_new = pd.DataFrame(self.data)df_new.to_excel(writer, sheet_name='data', index=False)spider.logger.info('生成報(bào)表成功: %s', output)

xpath的高級(jí)用法

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