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我正在尝试从表中获取信息。TD 内部有一些链接，在这种情况下，我将检索 href="" 内容而不是 TD 文本本身。这是我一直在使用的代码。

url = 'http://www.milavia.net/airshows/calendar/showdates-2020-world.html'

page = session.get(url)
soup = BeautifulSoup(page.content, 'lxml')

tableOutput = []
for row in soup.find_all('tr')[1:]:
    date, event, location, website, facebook, feature, notes = row.find_all('td')[0:7]
    # print(website)
    p = {
        'Date': date.text.strip(),
        'Event': event.text.strip(),
        'Location': location.text.strip(),
        # 'Site': website.text.strip(),
        'Site': website.select('a', href=True, text='TEXT'),
        'Facebook': facebook.text.strip(),
        'Featuring': feature.text.strip(),
        'Notes': notes.text.strip()
    }
    tableOutput.append(p)
print(tableOutput)

这是输出：

[{'Data': '15-18 Jan', 'Evento': 'Kuwait Aviation Show', 'Local': 'Kuwait International Airport, Kuwait', 'Site': [<a class="asclnk" href="http://kuwaitaviationshow.com/" target="airshow" title="Visit Kuwait Aviation Show Website: kuwaitaviationshow.com">link</a>], 'Facebook': '', 'Atração': '', 'Obs.': 'public 17-18'}, {'Data': '18 Jan', 'Evento': 'Classics of the Sky Tauranga City Airshow', 'Local': 'Tauranga, New Zealand', 'Site': [<a class="asclnk" href="http://www.tcas.nz" target="airshow" title="Visit Classics of the Sky Tauranga City Airshow Website: www.tcas.nz">link</a>], 'Facebook': '', 'Atração': '', 'Obs.': ''}, {'Data': 'Date', 'Evento': 'Event', 'Local': 'Location', 'Site': [], 'Facebook': 'Facebook', 'Atração': 'Feature', 'Obs.': 'Notes'}]

我无法仅获取 href 中的文本，例如

a class="asclnk" href=" http://www.tcas.nz " target="airshow" title="参观天空经典 陶朗加市航展网站：www.tcas.nz">

我尝试了一些使用 website.select() 或 website.find() 的方法，但它们都没有给我所需的结果。

任何帮助都会很棒。谢谢

4

2 回答 2

1

您尝试的参考链接不起作用的原因是您有迭代行并且某些行没有锚标记 href 属性，因此它失败了。我提供了一个 if 条件来检查。现在试试。

import requests
from bs4 import BeautifulSoup
url = 'http://www.milavia.net/airshows/calendar/showdates-2020-world.html'
session=requests.session()
page = session.get(url)
soup = BeautifulSoup(page.content, 'lxml')

tableOutput = []
for row in soup.find_all('tr')[1:]:
    date, event, location, website, facebook, feature, notes = row.find_all('td')[0:7]
    if website.select_one('a[href]'):
        p = {
           'Date': date.text.strip(),
           'Event': event.text.strip(),
           'Location': location.text.strip(),
           # 'Site': website.text.strip(),
           'Site': website.select_one('a[href]')['href'],
           'Facebook': facebook.text.strip(),
           'Featuring': feature.text.strip(),
           'Notes': notes.text.strip()
            }
        tableOutput.append(p)
print(tableOutput)

输出：

[{'Featuring': '', 'Location': 'Kuwait International Airport, Kuwait', 'Site': 'http://kuwaitaviationshow.com/', 'Date': '15-18 Jan', 'Facebook': '', 'Event': 'Kuwait Aviation Show', 'Notes': 'public 17-18'}, {'Featuring': '', 'Location': 'Tauranga, New Zealand', 'Site': 'http://www.tcas.nz', 'Date': '18 Jan', 'Facebook': '', 'Event': 'Classics of the Sky Tauranga City Airshow', 'Notes': ''}, {'Featuring': '', 'Location': 'Lucknow, Uttar Pradesh, India', 'Site': 'https://defexpo.gov.in/', 'Date': '05-08 Feb', 'Facebook': '', 'Event': 'Defexpo India 2020', 'Notes': 'public Sat. 8th'}, {'Featuring': '', 'Location': 'Changi Exhibition Centre, Singapore', 'Site': 'http://www.singaporeairshow.com/', 'Date': '11-16 Feb', 'Facebook': '', 'Event': 'Singapore Airshow 2020', 'Notes': 'public Sat-SunReports: 2018 2014'}, {'Featuring': '', 'Location': 'Al Bateen Executive Airport, Abu Dhabi, United Arab Emirates', 'Site': 'http://www.adairexpo.com/', 'Date': '04-06 Mar', 'Facebook': '', 'Event': 'Abu Dhabi Air Expo & Heli Expo 2020', 'Notes': 'trade expo'}, {'Featuring': '', 'Location': "Djerba–Zarzis Int'l Airport, Djerba, Tunisia", 'Site': 'http://www.iadetunisia.com/en/', 'Date': '04-08 Mar', 'Facebook': '', 'Event': 'IADE Tunisia 2020', 'Notes': 'public days 7-8'}, {'Featuring': '', 'Location': 'Tyabb Airport, Tyabb VIC, Australia', 'Site': 'http://www.tyabbairshow.com/', 'Date': '08 Mar', 'Facebook': '', 'Event': 'Tyabb Air Show 2020', 'Notes': ''}, {'Featuring': '', 'Location': 'Echuca Airport, Echuca VIC, Australia', 'Site': 'http://www.antique-aeroplane.com.au/', 'Date': '20-22 Mar', 'Facebook': '', 'Event': 'AAAA National Fly-in', 'Notes': ''}, {'Featuring': '', 'Location': "Santiago Int'l Airport, Santiago, Chile", 'Site': 'http://www.fidae.cl/', 'Date': '31 Mar / 05 Apr', 'Facebook': '', 'Event': 'FIDAE 2020', 'Notes': 'public Apr 4-5'}, {'Featuring': '', 'Location': "Santiago Int'l Airport, Santiago, Chile", 'Site': 'http://www.fidae.cl/', 'Date': '31 Mar / 05 Apr', 'Facebook': '', 'Event': 'FIDAE 2020', 'Notes': 'public Apr 4-5'}, {'Featuring': '', 'Location': 'Wanaka Airport, Otago, New Zealand', 'Site': 'http://www.warbirdsoverwanaka.com/', 'Date': '11-13 Apr', 'Facebook': '', 'Event': 'Warbirds Over Wanaka 2020', 'Notes': 'Report 2010'}, {'Featuring': '', 'Location': 'Illawarra Regional Airport, Wollongong NSW, Australia', 'Site': 'http://www.woi.org.au/', 'Date': '02-03 May', 'Facebook': '', 'Event': 'Wings over Illawarra', 'Notes': ''}, {'Featuring': '', 'Location': 'AFB Waterkloof, Centurion, South Africa', 'Site': 'http://www.aadexpo.co.za/', 'Date': '16-20 Sep', 'Facebook': '', 'Event': 'Africa Aerospace & Defence - AAD 2020', 'Notes': 'public 19-20'}, {'Featuring': '', 'Location': 'JIExpo Kemayoran, Jakarta, Indonesia', 'Site': 'http://www.indoaerospace.com/', 'Date': '04-07 Nov', 'Facebook': '', 'Event': 'Indo Aerospace 2020', 'Notes': 'trade only'}, {'Featuring': '', 'Location': 'Zhuhai, Guangdong, China', 'Site': 'http://www.airshow.com.cn/', 'Date': '10-15 Nov', 'Facebook': '', 'Event': 'Airshow China 2020', 'Notes': 'public 13-15th'}, {'Featuring': '', 'Location': 'Sakhir Air Base, Bahrain', 'Site': 'http://www.bahraininternationalairshow.com/', 'Date': '18-20 Nov', 'Facebook': '', 'Event': 'Bahrain International Airshow BIAS 2020', 'Notes': ''}]
于 2019-11-15T13:02:13.057 回答
0

预先使用 css 进行过滤。使用 bs4 4.7.1，您可以确保仅使用包含这些链接的行:has。这减少了代码行并消除了对索引的需求。如果你使用select，你可以利用limit论点。

import requests
from bs4 import BeautifulSoup

url = 'http://www.milavia.net/airshows/calendar/showdates-2020-world.html'
page = requests.get(url)
soup = BeautifulSoup(page.content, 'lxml')

tableOutput = []
for row in soup.select('tr:has(.asclnk[href])'):
    date, event, location, website, facebook, feature, notes = row.select('td',limit=7)

    p = {
       'Date': date.text.strip(),
       'Event': event.text.strip(),
       'Location': location.text.strip(),
       'Site': website.select_one('a[href]')['href'],
       'Facebook': facebook.text.strip(),
       'Featuring': feature.text.strip(),
       'Notes': notes.text.strip()
        }
    tableOutput.append(p)
print(tableOutput)
于 2019-11-15T17:34:18.033 回答