Webdata抓取HtmlSpan變數Python

我已經能夠成功登錄：

#!/usr/bin/python3-10-6
import mechanize from bs4 
import BeautifulSoup 
import urllib.request as urllib2 
import http.cookiejar as cookielib
#import cookielib ## http.cookiejar in python3

cj = cookielib.CookieJar() 
br = mechanize.Browser() 
br.set_cookiejar(cj) 
br.open("https://www.sunnyportal.com/Templates/Start.aspx?logout=true")

br.select_form(nr=0) 
br.form['ctl00$ContentPlaceHolder1$Logincontrol1$txtUserName'] = '[email protected]' 
br.form['ctl00$ContentPlaceHolder1$Logincontrol1$txtPassword'] = 'XXXXXXXX' 
br.submit()

url = 'https://www.sunnyportal.com/Templates/Start.aspx?logout=false'
r = requests.get(url)
soup = BeautifulSoup(r.text, 'html.parser')
desired_data = soup.select("span", {"class":'.mainValueUnit'})
for x in desired_data:
    print('TEXT VALUE:', x.get_text(strip=True), '|', 'DATA_PEAK:', x.get('data-peak'))

現在我想報廢一個跨度標簽（光伏發電）

<div class="widgetBox" data-name="pvPower">
    <div class="widgetHead">Aktuelle PV-Leistung</div>
    <div class="widgetSubHead"></div>
    <div class="widgetBody">
        <div class="mainValue">
            <img class="powerGaugeBackground" src="/Images/Dashboard/gauge.png" alt="" />
            <img class="powerGaugePointer" src="/Images/Dashboard/currentPlantPowerPointer.png" alt="" />
            <span
                class="mainValueAmount" 
                data-peak="4920"
                data-value="300"
                data-timestamp="2022-10-02T09:15:00">-</span>
            <span class="mainValueUnit"></span>
        </div>
    </div>
    <div class="widgetFooter">
        <a id="ctl00_ContentPlaceHolder1_UserControlShowDashboard1_currentplantPowerWidget_FooterLink" href="javascript:__doPostBack(&#39;ctl00$ContentPlaceHolder1$UserControlShowDashboard1$currentplantPowerWidget$FooterLink&#39;,&#39;&#39;)">Energie und Leistung ?</a>
    </div>
</div>

如何報廢和列印跨度值？它是 PV_power 的動態變數，經過檢查：

<span class="mainValueAmount" data-peak="4920" data-value="908" data-timestamp="2022-10-02T13:00:00">1177</span>

“1177”號碼是我正在尋找的動態號碼。謝謝

uj5u.com熱心網友回復：

假設您的 HTML 是正確的，并且它沒有使用 Javascript 動態加載/豐富，您可以通過以下方式獲取該資料：

from bs4 import BeautifulSoup as bs

html = '''
<div class="widgetBox" data-name="pvPower">
    <div class="widgetHead">Aktuelle PV-Leistung</div>
    <div class="widgetSubHead"></div>
    <div class="widgetBody">
        <div class="mainValue">
            <img class="powerGaugeBackground" src="/Images/Dashboard/gauge.png" alt="" />
            <img class="powerGaugePointer" src="/Images/Dashboard/currentPlantPowerPointer.png" alt="" />
            <span
                class="mainValueAmount" 
                data-peak="4920"
                data-value="300"
                data-timestamp="2022-10-02T09:15:00">-</span>
            <span class="mainValueUnit"></span>
        </div>
    </div>
    <div class="widgetFooter">
        <a id="ctl00_ContentPlaceHolder1_UserControlShowDashboard1_currentplantPowerWidget_FooterLink" href="javascript:__doPostBack(&#39;ctl00$ContentPlaceHolder1$UserControlShowDashboard1$currentplantPowerWidget$FooterLink&#39;,&#39;&#39;)">Energie und Leistung ?</a>
    </div>
</div>
'''
soup = bs(html, 'html.parser')

desired_data = soup.select('.mainValueAmount')
for x in desired_data:
    print('TEXT VALUE:', x.get_text(strip=True), '|', 'DATA_PEAK:', x.get('data-peak'))

結果在終端：

TEXT VALUE: - | DATA_PEAK: 4920

對于 BeautifulSoup 檔案，請訪問https://beautiful-soup-4.readthedocs.io/en/latest/index.html

標籤：htmlpython-3.x变量网页抓取

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