Python fetching </h1>
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<P> Ich möchte den Titel einer Webseite holen, die ich urllib2 mit öffnen. Was ist der beste Weg, dies zu tun, die HTML zu analysieren und finden, was ich (vorerst nur der -tag aber vielleicht in Zukunft mehr brauche) benötigen. </P>
<P> Gibt es einen guten Parsing lib für diesen Zweck? </P> </div>
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<i class="far fa-thumbs-up"></i> Lösung </p>
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<P> Ja, ich würde empfehlen, <a href="http://www.crummy.com/software/BeautifulSoup/" rel="noreferrer"> BeautifulSoup </a> </p>
<P> Wenn Sie den Titel sind immer es ist einfach: </p>
<pre><code>soup = BeautifulSoup(html)
myTitle = soup.html.head.title
</code></pre>
<P> oder </p>
<pre><code>myTitle = soup('title')
</code></pre>
<P> Genommen von <a href="http://www.crummy.com/software/BeautifulSoup/documentation.html" rel="noreferrer"> der Dokumentation </a> </p>
<P> Es ist sehr robust und wird die HTML egal analysiert, wie chaotisch es ist. </P> </div>
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<P> Versuchen Sie <a href="http://www.crummy.com/software/BeautifulSoup/" rel="noreferrer"> Schöne Suppe </a>: </p>
<pre><code>url = 'http://www.example.com'
response = urllib2.urlopen(url)
html = response.read()
soup = BeautifulSoup(html)
title = soup.html.head.title
print title.contents
</code></pre> </div>
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<P> Warum hat sie eine ganze zusätzliche Bibliothek für eine Aufgabe zu importieren. Keine regulären Ausdrücke? war nicht der Antrag auf urllib nicht BS4 oder mech, die Dritten sind? mit Standard-Bibliotheken analysieren, um die HTML-und passen die Zeichenfolge dann teilen Sie die <code>'>'</code> <code>'<'</code> mit Re oder whateves zu tun. </p>
<pre><code>N=(len(html))
for a in html(N):
if '<title>' in a:
Title=(str(a))
</code></pre>
<P> das ist Python 2 Ich denke, man kann es abzustreifen </p> </div>
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<P> Verwenden Sie <a href="http://www.crummy.com/software/BeautifulSoup/" rel="nofollow noreferrer"> Schöne Suppe </a>. </P>
<pre><code>html = urllib2.urlopen("...").read()
from BeautifulSoup import BeautifulSoup
soup = BeautifulSoup(html)
print soup.title.string
</code></pre> </div>
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