attributeError：＆＃x27; str＆＃x27;对象没有属性＆＃x27; xpath＆＃x27;碎屑python

Question

我正在尝试从网页中提取值，但它使我获得了attributeError。我不确定为什么要打印此错误。如果您查看代码，您将找不到引起此错误的内容。实际上，第一个值plan正在提取正常，但问题是第二个值Price。以下是我的代码，看看我做错了什么？

price = plan.xpath('normalize-space(.//h4)').get()
AttributeError: 'str' object has no attribute 'xpath'

以下是我的代码。

import requests
from scrapy import Selector


headers = {
    'authority': 'www.spectrum.com',
    'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
    'accept-language': 'en-PK,en;q=0.9,ur-PK;q=0.8,ur;q=0.7,en-GB;q=0.6,en-US;q=0.5,sv;q=0.4,it;q=0.3',
    'cache-control': 'max-age=0',
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spectrum-residential-user-profile=%7B%22zipcode%22%3A%22%22%2C%22city%22%3A%22%22%2C%22state%22%3A%22%22%2C%22serviceVendorName%22%3A%22%22%2C%22isSPP1%22%3A%22%22%2C%22isSPP2%22%3A%22%22%2C%22isSPP3%22%3A%22%22%2C%22isSPP4%22%3A%22%22%2C%22isSPP5%22%3A%22%22%2C%22isSPP6%22%3A%22%22%2C%22isSPP7%22%3A%22%22%2C%22isSPP8%22%3A%22%22%2C%22isNPP%22%3A%22%22%2C%22isTwcD3%22%3A%22%22%2C%22isTwcSTDA%22%3A%22%22%2C%22isTwcSTD%22%3A%22%22%2C%22isTwcSELA%22%3A%22%22%2C%22isTwcSEL%22%3A%22%22%2C%22isCharterD3%22%3A%22%22%2C%22isCharterD3NCS%22%3A%22%22%2C%22isCharterSTDS%22%3A%22%22%2C%22isCharterD3STL%22%3A%22%22%2C%22isCharterSELS%22%3A%22%22%2C%22isBhnSTD%22%3A%22%22%2C%22isBhnSEL%22%3A%22%22%2C%22isBackToSchool%22%3A%22%22%2C%22isBHNMultipleMSO%22%3A%22%22%2C%22isCharterMultipleMSO%22%3A%22%22%2C%22isTWCMultipleMSO%22%3A%22%22%2C%22isServiceableHawaii%22%3A%22%22%2C%22isNYCOutOfFootprint%22%3A%22%22%2C%22isResi30%22%3A%22%22%2C%22isResi60%22%3A%22%22%2C%22isResi100%22%3A%22%22%2C%22isResi200%22%3A%22%22%2C%22isResi400%22%3A%22%22%2C%22isResi940%22%3A%22%22%2C%22isNewWaveSwitch%22%3A%22%22%2C%22isCDELightbandSwitch%22%3A%22%22%2C%22isMicrologicSwitch%22%3A%22%22%2C%22isLocalTelSwitch%22%3A%22%22%2C%22isSpectrumInternetAssist%22%3A%22%22%2C%22isMINet%22%3A%22%22%2C%22isMontanaOpticom%22%3A%22%22%2C%22isSilverStarCommunications%22%3A%22%22%2C%22isTCTWest%22%3A%22%22%2C%22isTSC%22%3A%22%22%2C%22isCPWS%22%3A%22%22%2C%22isCitiLinks%22%3A%22%22%2C%22isATMC%22%3A%22%22%2C%22isVast%22%3A%22%22%2C%22isHorizon%22%3A%22%22%2C%22isClevelandOHZipcode%22%3A%22%22%2C%22isColumbusOHZipcode%22%3A%22%22%2C%22isEvansvilleINZipcode%22%3A%22%22%7D; 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_cls_v=fd065e19-d04d-4037-95f1-2915722ce6fa; _cls_s=c2d97766-d6a9-400e-9256-cc7f306d74ff:0; _fbp=fb.1.1657111781756.1149817254; _uetsid=1a9139f0fd2a11ecac7a8b3cd8b5e640; _uetvid=1a917710fd2a11eca2847d6bd10b6b3f; _gcl_au=1.1.730465435.1657111782; com.silverpop.iMAWebCookie=ea054721-7458-28b9-e149-b14adde1da9d; com.silverpop.iMA.session=ade0dd24-3755-e2c5-5a79-b3a6053a5ce5; com.silverpop.iMA.page_visit=1519396976:; sc.ASP.NET_SESSIONID=vx0d41gedc4quweaf0dopvwd; _tq_id.18365409-1.91a5=a49be617f522fe17.1657111783.0.1657111783..; sc.UserId=bbe2768c-41cc-45d2-8e4f-d5f20bf1d6e0; _clck=hx5wof|1|f2x|0; btIdentify=13899909-7620-426b-df11-185cd019a2f0; _bts=94b9da89-0af8-4fb8-c8cf-4cfb1d262628; _clsk=14hzxd1|1657111783980|1|0|l.clarity.ms/collect; AMCVS_97C902BE53295FC80A490D4C%40AdobeOrg=1; AMCV_97C902BE53295FC80A490D4C%40AdobeOrg=-330454231%7CMCMID%7C22421919196769338640237431338961795837%7CMCAAMLH-1657716584%7C3%7CMCAAMB-1657716584%7CRKhpRz8krg2tLO6pguXWp5olkAcUniQYPHaMWWgdJ3xzPWQmdj0y%7CMCOPTOUT-1657118984s%7CNONE%7CvVersion%7C3.1.2; s_cc=true; _bti=%7B%22app_id%22%3A%22charter%22%2C%22bsin%22%3A%22pEXKvtttqTjjtgQef5zYKUDXao8SkpfqlrDanE%2F2zNR9slbf6%2FhE2Gyr4IjNsJC9w5PwIyuprzJtPvIM%2F2KPhw%3D%3D%22%2C%22is_identified%22%3Afalse%7D; aam_uuid=12467149554957211440944457970446103725; akavpau_Global=1657112106~id=e008851a51085afc5fa869b5b4bcbf42; s_sess=%20s_ppv%3D23%3B%20s_prop20%3Dbrowse%3B%20search_prop17%3DNo%2520Information%2520Avaliable%3B; s_pers=%20s_vnum%3D1688647784115%2526vn%253D1%7C1688647784115%3B%20s_previousPage%3Dcom%253Ainternet%7C1657113615499%3B%20s_nr%3D1657111815507-New%7C1659703815507%3B%20s_invisit%3Dtrue%7C1657113615510%3B%20s_dayslastvisit%3D1657111815512%7C1751719815512%3B%20s_dayslastvisit_s%3DFirst%2520Visit%7C1657113615512%3B; utag_main=v_id:0181d38f1b81000e58ce096006f10506f002106700bd0{_sn:1$_ss:1$_pn:1%3Bexp-session$_st:1657113615521$ses_id:1657111780225%3Bexp-session$_ga:3936920691.1657111781$vapi_domain:spectrum.com$dcsyncran:1%3Bexp-session$dc_visit:1$dc_event:1%3Bexp-session$dc_region:eu-central-1%3Bexp-session$aam_load:true%3Bexp-session;} RT=\"z=1&dm=www.spectrum.com&si=b2dc65b1-5a7d-4a10-896d-0e0a7e16f4ef&ss=l59lkcgo&sl=1&tt=8t5&bcn=%2F%2F684d0d44.akstat.io%2F&ld=8t8&ul=z6k\"",
    'sec-ch-ua': '".Not/A)Brand";v="99", "Google Chrome";v="103", "Chromium";v="103"',
    'sec-ch-ua-mobile': '?0',
    'sec-ch-ua-platform': '"Windows"',
    'sec-fetch-dest': 'document',
    'sec-fetch-mode': 'navigate',
    'sec-fetch-site': 'none',
    'sec-fetch-user': '?1',
    'upgrade-insecure-requests': '1',
    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36',
}

r = requests.get('https://www.spectrum.com/internet', headers=headers)
response = Selector(text=r.text)
plans = response.xpath('(//div[@class="cardsContainer__body"])[1]/div')
for plan in plans:
    plan = plan.xpath('normalize-space(.//div[@class="iconcard__subheader"])').get()
    price = plan.xpath('normalize-space(.//h4)').get()
    
    data = {
        "Plan": plan,
        "Price": price
    }
    
    print(data)

Answer 1

https://docs.scrapy.org/en/latest/latest/topics/selectors。 html

.xpath（...）方法返回选择器您可以再次调用.xpath。

但是在选择器上调用.get（）返回字符串值。

SO plan = plan.xpath（'justronize-space（.// div [@class =“ iconcard__subheader”]）。值，然后在下行上无法调用.xpath。

：

r = requests.get('https://www.spectrum.com/internet', headers=headers)
response = Selector(text=r.text)
plans = response.xpath('(//div[@class="cardsContainer__body"])[1]/div')
for plan in plans:
    plan_selector = plan.xpath('normalize-space(.//div[@class="iconcard__subheader"])')
    plan = plan_selector.get()
    price = plan_selector.xpath('normalize-space(.//h4)').get()
    
    data = {
        "Plan": plan,
        "Price": price
    }
    
    print(data)

尝试以下尝试

根据op在他们自己的答案听起来像是他们原始代码价格的意图= plan.xpath（'justranize-space（.// h4）'）。get（）是使用原始plan实例，而不是它们更换的实例使用plan = plan.xpath（...）在上面的行中。

因此，代码应该是：

r = requests.get('https://www.spectrum.com/internet', headers=headers)
response = Selector(text=r.text)
plans = response.xpath('(//div[@class="cardsContainer__body"])[1]/div')
for plan in plans:
    plan_value = plan.xpath('normalize-space(.//div[@class="iconcard__subheader"])').get()
    price = plan.xpath('normalize-space(.//h4)').get()
    
    data = {
        "Plan": plan_value,
        "Price": price
    }
    
    print(data)

Answer 2

非常奇怪的行为。我将Price线移动了上述行，它起作用了。