我的脚本 :
def fetch_online():
pattern = re.search( (<span class="on">)(.*)(</span>) , data)
return pattern.group(2)
print fetch_online()
data 内有一行包含以下内容:
<b><span><span class="on">5879</span> users online</span></b>
然而,当运行时,产出是:
5879</span> users online
我应如何修正此选项, 这样它只能在第一个 < code_ lt; /span> 之前抓取数据?
在此具体情况下, 以
<span class="on">(.*?)</span>
使用非greedy 量化符 : (( & lt; span类=“ on” & gt;) (. *)? ( & lt;/ span>)) 。
要了解更多关于非greedy 量化符的信息,请在上读“不贪婪而不贪婪”一节,网址是:http://www.regular-表达式.info/repeat.html” rel=“nofollown noreferrer”>Regular-Expressions.info 。
只要重申评论中已经说过的话,。
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