requests html
v0.10.0
該庫旨在使解析 HTML（例如抓取網頁）盡可能簡單直觀。
使用此庫時，您會自動獲得：
使用 Requests 向「python.org」發出 GET 請求：
>>> from requests_html import HTMLSession
>>> session = HTMLSession()
>>> r = session.get( ' https://python.org/ ' )嘗試異步並同時獲取一些網站：
>>> from requests_html import AsyncHTMLSession
>>> asession = AsyncHTMLSession()
>>> async def get_pythonorg ():
... r = await asession.get( ' https://python.org/ ' )
... return r
...
>>> async def get_reddit ():
... r = await asession.get( ' https://reddit.com/ ' )
... return r
...
>>> async def get_google ():
... r = await asession.get( ' https://google.com/ ' )
... return r
...
>>> results = asession.run(get_pythonorg, get_reddit, get_google)
>>> results # check the requests all returned a 200 (success) code
[<Response [200]>, <Response [200]>, <Response [200]>]
>>> # Each item in the results list is a response object and can be interacted with as such
>>> for result in results:
... print (result.html.url)
...
https://www.python.org/
https://www.google.com/
https://www.reddit.com/請注意，結果清單中物件的順序表示它們傳回的順序，而不是協程傳遞給run方法的順序，範例中的順序不同。
按原樣取得頁面上所有連結的清單（不包括錨點）：
>>> r.html.links
{'//docs.python.org/3/tutorial/', '/about/apps/', 'https://github.com/python/pythondotorg/issues', '/accounts/login/', '/dev/peps/', '/about/legal/', '//docs.python.org/3/tutorial/introduction.html#lists', '/download/alternatives', 'http://feedproxy.google.com/~r/PythonInsider/~3/kihd2DW98YY/python-370a4-is-available-for-testing.html', '/download/other/', '/downloads/windows/', 'https://mail.python.org/mailman/listinfo/python-dev', '/doc/av', 'https://devguide.python.org/', '/about/success/#engineering', 'https://wiki.python.org/moin/PythonEventsCalendar#Submitting_an_Event', 'https://www.openstack.org', '/about/gettingstarted/', 'http://feedproxy.google.com/~r/PythonInsider/~3/AMoBel8b8Mc/python-3.html', '/success-stories/industrial-light-magic-runs-python/', 'http://docs.python.org/3/tutorial/introduction.html#using-python-as-a-calculator', '/', 'http://pyfound.blogspot.com/', '/events/python-events/past/', '/downloads/release/python-2714/', 'https://wiki.python.org/moin/PythonBooks', 'http://plus.google.com/+Python', 'https://wiki.python.org/moin/', 'https://status.python.org/', '/community/workshops/', '/community/lists/', 'http://buildbot.net/', '/community/awards', 'http://twitter.com/ThePSF', 'https://docs.python.org/3/license.html', '/psf/donations/', 'http://wiki.python.org/moin/Languages', '/dev/', '/events/python-user-group/', 'https://wiki.qt.io/PySide', '/community/sigs/', 'https://wiki.gnome.org/Projects/PyGObject', 'http://www.ansible.com', 'http://www.saltstack.com', 'http://planetpython.org/', '/events/python-events', '/about/help/', '/events/python-user-group/past/', '/about/success/', '/psf-landing/', '/about/apps', '/about/', 'http://www.wxpython.org/', '/events/python-user-group/665/', 'https://www.python.org/psf/codeofconduct/', '/dev/peps/peps.rss', '/downloads/source/', '/psf/sponsorship/sponsors/', 'http://bottlepy.org', 'http://roundup.sourceforge.net/', 'http://pandas.pydata.org/', 'http://brochure.getpython.info/', 'https://bugs.python.org/', '/community/merchandise/', 'http://tornadoweb.org', '/events/python-user-group/650/', 'http://flask.pocoo.org/', '/downloads/release/python-364/', '/events/python-user-group/660/', '/events/python-user-group/638/', '/psf/', '/doc/', 'http://blog.python.org', '/events/python-events/604/', '/about/success/#government', 'http://python.org/dev/peps/', 'https://docs.python.org', 'http://feedproxy.google.com/~r/PythonInsider/~3/zVC80sq9s00/python-364-is-now-available.html', '/users/membership/', '/about/success/#arts', 'https://wiki.python.org/moin/Python2orPython3', '/downloads/', '/jobs/', 'http://trac.edgewall.org/', 'http://feedproxy.google.com/~r/PythonInsider/~3/wh73_1A-N7Q/python-355rc1-and-python-348rc1-are-now.html', '/privacy/', 'https://pypi.python.org/', 'http://www.riverbankcomputing.co.uk/software/pyqt/intro', 'http://www.scipy.org', '/community/forums/', '/about/success/#scientific', '/about/success/#software-development', '/shell/', '/accounts/signup/', 'http://www.facebook.com/pythonlang?fref=ts', '/community/', 'https://kivy.org/', '/about/quotes/', 'http://www.web2py.com/', '/community/logos/', '/community/diversity/', '/events/calendars/', 'https://wiki.python.org/moin/BeginnersGuide', '/success-stories/', '/doc/essays/', '/dev/core-mentorship/', 'http://ipython.org', '/events/', '//docs.python.org/3/tutorial/controlflow.html', '/about/success/#education', '/blogs/', '/community/irc/', 'http://pycon.blogspot.com/', '//jobs.python.org', 'http://www.pylonsproject.org/', 'http://www.djangoproject.com/', '/downloads/mac-osx/', '/about/success/#business', 'http://feedproxy.google.com/~r/PythonInsider/~3/x_c9D0S-4C4/python-370b1-is-now-available-for.html', 'http://wiki.python.org/moin/TkInter', 'https://docs.python.org/faq/', '//docs.python.org/3/tutorial/controlflow.html#defining-functions'}以絕對形式取得頁面上所有連結的清單（不包括錨點）：
>>> r.html.absolute_links
{'https://github.com/python/pythondotorg/issues', 'https://docs.python.org/3/tutorial/', 'https://www.python.org/about/success/', 'http://feedproxy.google.com/~r/PythonInsider/~3/kihd2DW98YY/python-370a4-is-available-for-testing.html', 'https://www.python.org/dev/peps/', 'https://mail.python.org/mailman/listinfo/python-dev', 'https://www.python.org/doc/', 'https://www.python.org/', 'https://www.python.org/about/', 'https://www.python.org/events/python-events/past/', 'https://devguide.python.org/', 'https://wiki.python.org/moin/PythonEventsCalendar#Submitting_an_Event', 'https://www.openstack.org', 'http://feedproxy.google.com/~r/PythonInsider/~3/AMoBel8b8Mc/python-3.html', 'https://docs.python.org/3/tutorial/introduction.html#lists', 'http://docs.python.org/3/tutorial/introduction.html#using-python-as-a-calculator', 'http://pyfound.blogspot.com/', 'https://wiki.python.org/moin/PythonBooks', 'http://plus.google.com/+Python', 'https://wiki.python.org/moin/', 'https://www.python.org/events/python-events', 'https://status.python.org/', 'https://www.python.org/about/apps', 'https://www.python.org/downloads/release/python-2714/', 'https://www.python.org/psf/donations/', 'http://buildbot.net/', 'http://twitter.com/ThePSF', 'https://docs.python.org/3/license.html', 'http://wiki.python.org/moin/Languages', 'https://docs.python.org/faq/', 'https://jobs.python.org', 'https://www.python.org/about/success/#software-development', 'https://www.python.org/about/success/#education', 'https://www.python.org/community/logos/', 'https://www.python.org/doc/av', 'https://wiki.qt.io/PySide', 'https://www.python.org/events/python-user-group/660/', 'https://wiki.gnome.org/Projects/PyGObject', 'http://www.ansible.com', 'http://www.saltstack.com', 'https://www.python.org/dev/peps/peps.rss', 'http://planetpython.org/', 'https://www.python.org/events/python-user-group/past/', 'https://docs.python.org/3/tutorial/controlflow.html#defining-functions', 'https://www.python.org/community/diversity/', 'https://docs.python.org/3/tutorial/controlflow.html', 'https://www.python.org/community/awards', 'https://www.python.org/events/python-user-group/638/', 'https://www.python.org/about/legal/', 'https://www.python.org/dev/', 'https://www.python.org/download/alternatives', 'https://www.python.org/downloads/', 'https://www.python.org/community/lists/', 'http://www.wxpython.org/', 'https://www.python.org/about/success/#government', 'https://www.python.org/psf/', 'https://www.python.org/psf/codeofconduct/', 'http://bottlepy.org', 'http://roundup.sourceforge.net/', 'http://pandas.pydata.org/', 'http://brochure.getpython.info/', 'https://www.python.org/downloads/source/', 'https://bugs.python.org/', 'https://www.python.org/downloads/mac-osx/', 'https://www.python.org/about/help/', 'http://tornadoweb.org', 'http://flask.pocoo.org/', 'https://www.python.org/users/membership/', 'http://blog.python.org', 'https://www.python.org/privacy/', 'https://www.python.org/about/gettingstarted/', 'http://python.org/dev/peps/', 'https://www.python.org/about/apps/', 'https://docs.python.org', 'https://www.python.org/success-stories/', 'https://www.python.org/community/forums/', 'http://feedproxy.google.com/~r/PythonInsider/~3/zVC80sq9s00/python-364-is-now-available.html', 'https://www.python.org/community/merchandise/', 'https://www.python.org/about/success/#arts', 'https://wiki.python.org/moin/Python2orPython3', 'http://trac.edgewall.org/', 'http://feedproxy.google.com/~r/PythonInsider/~3/wh73_1A-N7Q/python-355rc1-and-python-348rc1-are-now.html', 'https://pypi.python.org/', 'https://www.python.org/events/python-user-group/650/', 'http://www.riverbankcomputing.co.uk/software/pyqt/intro', 'https://www.python.org/about/quotes/', 'https://www.python.org/downloads/windows/', 'https://www.python.org/events/calendars/', 'http://www.scipy.org', 'https://www.python.org/community/workshops/', 'https://www.python.org/blogs/', 'https://www.python.org/accounts/signup/', 'https://www.python.org/events/', 'https://kivy.org/', 'http://www.facebook.com/pythonlang?fref=ts', 'http://www.web2py.com/', 'https://www.python.org/psf/sponsorship/sponsors/', 'https://www.python.org/community/', 'https://www.python.org/download/other/', 'https://www.python.org/psf-landing/', 'https://www.python.org/events/python-user-group/665/', 'https://wiki.python.org/moin/BeginnersGuide', 'https://www.python.org/accounts/login/', 'https://www.python.org/downloads/release/python-364/', 'https://www.python.org/dev/core-mentorship/', 'https://www.python.org/about/success/#business', 'https://www.python.org/community/sigs/', 'https://www.python.org/events/python-user-group/', 'http://ipython.org', 'https://www.python.org/shell/', 'https://www.python.org/community/irc/', 'https://www.python.org/about/success/#engineering', 'http://www.pylonsproject.org/', 'http://pycon.blogspot.com/', 'https://www.python.org/about/success/#scientific', 'https://www.python.org/doc/essays/', 'http://www.djangoproject.com/', 'https://www.python.org/success-stories/industrial-light-magic-runs-python/', 'http://feedproxy.google.com/~r/PythonInsider/~3/x_c9D0S-4C4/python-370b1-is-now-available-for.html', 'http://wiki.python.org/moin/TkInter', 'https://www.python.org/jobs/', 'https://www.python.org/events/python-events/604/'}使用 CSS 選擇器選擇一個元素：
>>> about = r.html.find( ' #about ' , first = True )取得元素的文字內容：
>>> print (about.text)
About
Applications
Quotes
Getting Started
Help
Python Brochure內省元素的屬性：
>>> about.attrs
{'id': 'about', 'class': ('tier-1', 'element-1'), 'aria-haspopup': 'true'}渲染出元素的 HTML：
>>> about.html
'<li aria-haspopup="true" class="tier-1 element-1 " id="about">n<a class="" href="/about/" title="">About</a>n<ul aria-hidden="true" class="subnav menu" role="menu">n<li class="tier-2 element-1" role="treeitem"><a href="/about/apps/" title="">Applications</a></li>n<li class="tier-2 element-2" role="treeitem"><a href="/about/quotes/" title="">Quotes</a></li>n<li class="tier-2 element-3" role="treeitem"><a href="/about/gettingstarted/" title="">Getting Started</a></li>n<li class="tier-2 element-4" role="treeitem"><a href="/about/help/" title="">Help</a></li>n<li class="tier-2 element-5" role="treeitem"><a href="http://brochure.getpython.info/" title="">Python Brochure</a></li>n</ul>n</li>'在元素中選擇元素：
>>> about.find( ' a ' )
[<Element 'a' href='/about/' title='' class=''>, <Element 'a' href='/about/apps/' title=''>, <Element 'a' href='/about/quotes/' title=''>, <Element 'a' href='/about/gettingstarted/' title=''>, <Element 'a' href='/about/help/' title=''>, <Element 'a' href='http://brochure.getpython.info/' title=''>]搜尋元素內的連結：
>>> about.absolute_links
{'http://brochure.getpython.info/', 'https://www.python.org/about/gettingstarted/', 'https://www.python.org/about/', 'https://www.python.org/about/quotes/', 'https://www.python.org/about/help/', 'https://www.python.org/about/apps/'}在頁面上搜尋文字：
>>> r.html.search( ' Python is a {} language ' )[ 0 ]
programming更複雜的 CSS 選擇器範例（從 Chrome 開發工具複製）：
>>> r = session.get( ' https://github.com/ ' )
>>> sel = ' body > div.application-main > div.jumbotron.jumbotron-codelines > div > div > div.col-md-7.text-center.text-md-left > p '
>>> print (r.html.find(sel, first = True ).text)
GitHub is a development platform inspired by the way you work. From open source to business, you can host and review code, manage projects, and build software alongside millions of other developers.還支援 XPath：
>>> r.html.xpath( ' /html/body/div[1]/a ' )
[<Element 'a' class=('px-2', 'py-4', 'show-on-focus', 'js-skip-to-content') href='#start-of-content' tabindex='1'>]讓我們取得一些由 JavaScript 呈現的文字。到 2020 年，Python 2.7 倒數計時鐘（https://pythonclock.org）將作為一個很好的測試頁面：
>>> r = session.get( ' https://pythonclock.org ' )讓我們試著看看動態渲染的程式碼（倒數時鐘）。為了首先快速完成此操作，我們將在之前看到的最後一個文字（「Python 2.7 will退休...」）和之後看到的第一個文字（「啟用 Guido 模式」）之間進行搜尋。
>>> r.html.search( ' Python 2.7 will retire in... {} Enable Guido Mode ' )[ 0 ]
'</h1>n </div>n <div class="python-27-clock"></div>n <div class="center">n <div class="guido-button-block">n <button class="js-guido-mode guido-button">'請注意，時鐘不見了。 render()方法取得回應並呈現動態內容，就像 Web 瀏覽器一樣。
>>> r.html.render()
>>> r.html.search( ' Python 2.7 will retire in... {} Enable Guido Mode ' )[ 0 ]
'</h1>n </div>n <div class="python-27-clock is-countdown"><span class="countdown-row countdown-show6"><span class="countdown-section"><span class="countdown-amount">1</span><span class="countdown-period">Year</span></span><span class="countdown-section"><span class="countdown-amount">2</span><span class="countdown-period">Months</span></span><span class="countdown-section"><span class="countdown-amount">28</span><span class="countdown-period">Days</span></span><span class="countdown-section"><span class="countdown-amount">16</span><span class="countdown-period">Hours</span></span><span class="countdown-section"><span class="countdown-amount">52</span><span class="countdown-period">Minutes</span></span><span class="countdown-section"><span class="countdown-amount">46</span><span class="countdown-period">Seconds</span></span></span></div>n <div class="center">n <div class="guido-button-block">n <button class="js-guido-mode guido-button">'讓我們把它清理一下。這一步不是必需的，它只是使返回的 html 更容易視覺化，以查看我們需要定位哪些內容來提取所需的資訊。
>>> from pprint import pprint
>>> pprint(r.html.search('Python 2.7 will retire in...{}Enable')[0])
('</h1>n'
' </div>n'
' <div class="python-27-clock is-countdown"><span class="countdown-row '
'countdown-show6"><span class="countdown-section"><span '
'class="countdown-amount">1</span><span '
'class="countdown-period">Year</span></span><span '
'class="countdown-section"><span class="countdown-amount">2</span><span '
'class="countdown-period">Months</span></span><span '
'class="countdown-section"><span class="countdown-amount">28</span><span '
'class="countdown-period">Days</span></span><span '
'class="countdown-section"><span class="countdown-amount">16</span><span '
'class="countdown-period">Hours</span></span><span '
'class="countdown-section"><span class="countdown-amount">52</span><span '
'class="countdown-period">Minutes</span></span><span '
'class="countdown-section"><span class="countdown-amount">46</span><span '
'class="countdown-period">Seconds</span></span></span></div>n'
' <div class="center">n'
' <div class="guido-button-block">n'
' <button class="js-guido-mode guido-button">')渲染的 html 具有與上面相同的方法和屬性。讓我們將我們想要的數據提取到易於在其他地方使用並像字典一樣進行反思的東西。
>>> periods = [element.text for element in r.html.find( ' .countdown-period ' )]
>>> amounts = [element.text for element in r.html.find( ' .countdown-amount ' )]
>>> countdown_data = dict ( zip (periods, amounts))
>>> countdown_data
{'Year': '1', 'Months': '2', 'Days': '5', 'Hours': '23', 'Minutes': '34', 'Seconds': '37'}或者您也可以執行此非同步操作：
>>> async def get_pyclock ():
... r = await asession.get( ' https://pythonclock.org/ ' )
... await r.html.arender()
... return r
...
>>> results = asession.run(get_pyclock, get_pyclock, get_pyclock)其餘程式碼的操作方式與同步版本相同，只是results是包含多個回應物件的列表，但是可以應用與上面相同的基本流程來提取所需的資料。
請注意，第一次執行render()方法時，它會將 Chromium 下載到您的主目錄（例如~/.pyppeteer/ ）。這種情況只會發生一次。
您也可以在沒有請求的情況下使用該庫：
>>> from requests_html import HTML
>>> doc = """ <a href='https://httpbin.org'> """
>>> html = HTML( html = doc)
>>> html.links
{'https://httpbin.org'}$ pipenv install requests-html
?僅支援Python 3.6及以上版本。
