如何在splinter中选择class,div,tag？
Aad*_*Ura 1 python selenium automation beautifulsoup splinter
我试图理解分裂功能,我试图在网上找到,但我找不到关于分裂的实用例子的好文档,所以我在这里问了几个问题,这样它会帮助初学者试图学习分裂:
首先,我混淆了splinter中的实际css选择器,我看到了两种方法:
browser.find_by_css()
要么
browser.find_by_css_selector()
它们之间有什么区别,为什么第二个不能在当前的分裂中工作？
现在我的原始问题是如何选择任何类下的任何标签,如何选择任何ID下的任何标签？
我试图找到,但我发现大多数stackoverflow问题的分裂"如何在下拉列表中选择选项值",并且分裂文档非常好,但问题是他们的方法没有足够实用的示例.
所以,如果我有这个HTML代码:
<div class="medium-widget success-story-category">
<h2 class="widget-title"><span aria-hidden="true" class="icon-get-started"></span>Getting Started</h2>
<p>Python can be easy to pick up whether you're a first time programmer or you're experienced with other languages. The following pages are a useful first step to get on your way writing programs with Python!</p>
<ul>
<li><a href="https://wiki.python.org/moin/BeginnersGuide/Programmers">Beginner's Guide, Programmers</a></li>
<li><a href="https://wiki.python.org/moin/BeginnersGuide/NonProgrammers">Beginner's Guide, Non-Programmers</a></li>
<li><a href="https://wiki.python.org/moin/BeginnersGuide/Download">Beginner's Guide, Download & Installation</a></li>
<li><a href="https://wiki.python.org/moin/BeginnersGuide/Examples">Code sample and snippets for Beginners</a></li>
</ul>
</div>
然后 :
如何通过选择选择
<p>标签数据class="medium-widget success-story-category"第二:如何选择第一个
<li>标签的 "href"第三:如何在第一个之间获取文本
<li></li>
现在如果有的话<class_name id="something">:
<nav id="mainnav" class="python-navigation main-navigation do-not-print" role="navigation">
<ul class="navigation menu" role="menubar" aria-label="Main Navigation">
<li id="about" class="tier-1 element-1 with-supernav" aria-haspopup="true">
<a href="/about/" title="" class=" current_item selected selected">About</a>
现在如何选择:
<nav id="mainnav" class="python-navigation main-navigation do-not-print" role="navigation">id使用find_by_css方法(不使用find_by_id)如何
<a>使用find_by_css 获取链接
我在这里找到了我的答案,我将解释这对其他程序员有帮助:
第一件事browser.find_by_css_selector()是不工作,我使用find_by_css方法完美的工作,所以我更喜欢find_by_css方法.
如何通过选择选择<p>标签数据class="medium-widget
success-story-category"
我们可以选择格式为的任何类:
div[class="class_name"] 要么 div[any_style_element="value"]
我们可以选择类
class="medium-widget
success-story-category"
的
div[class="medium-widget
success-story-category"]
我们可以选择
标记为 ('div[class="medium-widget success-story-category"] p')
我们还可以找到:
find_h=browser.find_by_css('div[class="medium-widget success-story-category last"]:nth-child(2)')
要么
当html是
`<div class="row">
<div class="medium-widget success-story-category">
<h2 class="widget-title"><span aria-hidden="true" class="icon-get-started"></span>Getting Started</h2>
<p>Python can be easy to pick up whether you're a first time programmer or you're experienced with other languages. The following pages are a useful first step to get on your way writing programs with Python!</p>
<ul>
<li><a href="https://wiki.python.org/moin/BeginnersGuide/Programmers">Beginner's Guide, Programmers</a></li>
<li><a href="https://wiki.python.org/moin/BeginnersGuide/NonProgrammers">Beginner's Guide, Non-Programmers</a></li>
<li><a href="https://wiki.python.org/moin/BeginnersGuide/Download">Beginner's Guide, Download & Installation</a></li>
<li><a href="https://wiki.python.org/moin/BeginnersGuide/Examples">Code sample and snippets for Beginners</a></li>
</ul>
</div>
<div class="medium-widget success-story-category last">
<h2 class="widget-title"><span aria-hidden="true" class="icon-success-stories"></span>Friendly & Easy to Learn</h2>
<p>The community hosts conferences and meetups, collaborates on code, and much more. Python's documentation will help you along the way, and the mailing lists will keep you in touch.</p>
<ul>
<li><a href="/community/workshops/">Conferences and Workshops</a></li>
<li><a href="http://docs.python.org">Python Documentation</a></li>
<li><a href="/community/lists">Mailing Lists</a> and <a href="/community/irc/">IRC channels</a></li>
</ul>
</div>
</div>`
通过使用 :
`find_h=browser.find_by_css('div[class="row"]:nth-child(1) > div:nth-child(1) > p')
for i in find_h:
print(i.text)`
我们可以捕捉到一个类中的图像
('div[class="image_class_name"] img') 然后 result["href" or "src"]
例如:
假设我必须选择该图像然后我可以通过此代码获取它:
find_h=browser.find_by_css('h1[class="site-headline"] img')
for i in find_h:
print(i["src"])
接下来的问题是如何选择
所以,如果我有这个HTML代码:
<div class="medium-widget success-story-category last">
<h2 class="widget-title"><span aria-hidden="true" class="icon-success-stories"></span>Friendly & Easy to Learn</h2>
<p>The community hosts conferences and meetups, collaborates on code, and much more. Python's documentation will help you along the way, and the mailing lists will keep you in touch.</p>
<ul>
<li><a href="/community/workshops/">Conferences and Workshops</a></li>
<li><a href="http://docs.python.org">Python Documentation</a></li>
<li><a href="/community/lists">Mailing Lists</a> and <a href="/community/irc/">IRC channels</a></li>
</ul>
</div>
<div class="medium-widget success-story-category last">
<h2 class="widget-title"><span aria-hidden="true" class="icon-success-stories"></span>Friendly & Easy to Learn</h2>
<p>The community hosts conferences and meetups, collaborates on code, and much more. Python's documentation will help you along the way, and the mailing lists will keep you in touch.</p>
<ul>
<li><a href="/community/workshops/">Conferences and Workshops</a></li>
<li><a href="http://docs.python.org">Python Documentation</a></li>
<li><a href="/community/lists">Mailing Lists</a> and <a href="/community/irc/">IRC channels</a></li>
</ul>
</div>
然后我们可以选择任何href链接
div[class="medium-widget success-story-category last"]:nth-child(1) > ul > li:nth-child(2) > a
请记住nth-child(2)in div[class="medium-widget success-story-category last"]:nth-child(1) 不选择此类的第二个嵌套div而不是nth-child(2)选择第二个medium-widget success-story-category last类(因为你可以看到有两个同名的类medium-widget success-story-category last).
上一个问题的最后答案:
如果有<class_name id="something">:
然后选择喜欢
class_name[id="something"]