在问这个问题时,我意识到我对原始字符串知之甚少.对于那些自称是Django训练师的人来说,这很糟糕.
我知道编码是什么,而且我知道u''自从我得到什么是Unicode以来我们独自做了什么.
但到底r''做了什么呢？它会产生什么样的字符串？
And above all, what the heck does ur'' do?
Finally, is there any reliable way to go back from a Unicode string to a simple raw string?
Ah, and by the way, if your system and your text editor charset are set to UTF-8, does u'' actually do anything?
我正在使用BeautifulSoup - python模块.我必须找到任何对id的引用,例如:'post-#'.例如:
<div id="post-45">...</div>
<div id="post-334">...</div>
我该如何过滤？
html = '<div id="post-45">...</div> <div id="post-334">...</div>'
soupHandler = BeautifulSoup(html)
print soupHandler.findAll('div', id='post-*')