Python模块BeautifulSoup提取锚HREF [英] Python module BeautifulSoup extracting anchors href
本文介绍了Python模块BeautifulSoup提取锚HREF的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我使用BeautifulSoup模块通过这种方式来选择所有的HTML HREF:
高清extract_links(HTML):
汤= BeautifulSoup(HTML)
锚= soup.findAll('A')
打印锚
链接= []
对于在锚:
links.append(一[HREF'])
返回链接
但有时它未能通过此错误消息:
回溯(最后最近一次调用):
文件C:\\ PY \\ main.py33行,上述<&模块GT;
网址= extract_links(页)
文件C:\\ PY \\ main.py,11号线,在extract_links
links.append(一[HREF'])
文件C:\\ PY \\ BeautifulSoup.py,线路601,在__getitem__
返回self._getAttrMap()[关键]
KeyError异常:HREF
解决方案
并非所有的锚标签将有href属性。您应检查锚有一个href您尝试访问该属性之前。
如果a.has_key('href属性)
links.append(一[HREF'])
在这里检查了一些意见后,我认为这是处理这种情况的最Python的方式。
i am using BeautifulSoup module to select all href from html by this way:
def extract_links(html):
soup = BeautifulSoup(html)
anchors = soup.findAll('a')
print anchors
links = []
for a in anchors:
links.append(a['href'])
return links
but sometime it failed by this error message:
Traceback (most recent call last):
File "C:\py\main.py", line 33, in <module>
urls = extract_links(page)
File "C:\py\main.py", line 11, in extract_links
links.append(a['href'])
File "C:\py\BeautifulSoup.py", line 601, in __getitem__
return self._getAttrMap()[key]
KeyError: 'href'
解决方案
Not all anchor tags will have an href attribute. You should check that the anchor has an href before you try to access that attribute.
if a.has_key('href')
links.append(a['href'])
After checking some comments here, I think this is the most pythonic way of handling this case.
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