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sicongliu
V2EX  ›  Python

请问这个正则表达式如何写

  •  
  •   sicongliu · May 28, 2015 · 4372 views
    This topic created in 4179 days ago, the information mentioned may be changed or developed.
    <dt><a name="313"></a>ADHE 313 (6) <b>Organization of Adult Basic Education Programs</b></dt>

    想抓出ADHE313和Organization of Adult Basic Education Programs
    18 replies  •  2015-05-29 10:45:43 +08:00
    asj
    asj
    May 28, 2015
    1
    这难道不是应该用CSS/JQuery selector,或者XPath么?
    phx13ye
    phx13ye
    May 28, 2015❤️1
    2
    <\/a>(.*)<b>(.*?)<\/b>
    sicongliu
    sicongliu
    OP
    May 28, 2015
    3
    xpath比较简单 但是想学下正则的方法
    shoumu
    shoumu
    May 28, 2015
    4
    看一下pyquery吧,支持jQuery的语法
    professorz
    professorz
    May 28, 2015
    5
    .+<\\/a>(.+)(6)<b>(.+)<\\/b>.+
    java下的regex
    sicongliu
    sicongliu
    OP
    May 28, 2015
    6
    python的如何写
    yiyiwa
    yiyiwa
    May 28, 2015
    7
    python测试了一下,不完善,有空的东西。

    '\>([^\<]*)\<'
    sicongliu
    sicongliu
    OP
    May 28, 2015
    8
    m=re.search("</a>(.*?)\s(",text)
    print (m.group(1))

    m=re.search("<b>(.*?)</b>(",text)
    print (m.group(1))
    sicongliu
    sicongliu
    OP
    May 28, 2015
    9
    如果要取ADHE 313呢?
    如何判断第二个空格?当然用字符串的search切片功能很容易达到,只是想知道正则如何达到
    sicongliu
    sicongliu
    OP
    May 28, 2015
    10
    m=re.search("</a>(.*?)\s+\(",text)
    print (m.group(1))

    当然方法比较笨,如果第二个空格后不是“(”就没办法了
    asj
    asj
    May 28, 2015
    11
    简单写了一个,还很不完善
    (?:<dt.*?>)(?:.*?\/.*?>)([\w ]*)(?:.*?)(?:<\/dt>)

    http://regexr.com/3b3bs
    fy
    fy
    May 28, 2015
    12
    这个需求不用正则,会简单得多

    page.xpath("//dt/text()") -> ADHE 313 (6)
    page.xpath("//dt/b/text()") -> Organization of Adult Basic Education Programs
    picasso250
    picasso250
    May 28, 2015
    13
    /a>([\w ()]+)<b>([\w ]+)</b>
    最简单的解决了你现在的问题。
    picasso250
    picasso250
    May 28, 2015
    14
    对不起,上一个是错误的,多提取了(6)

    /a>(\w+ \d+).+?<b>([\w ]+)</b>
    leozy2014
    leozy2014
    May 28, 2015
    15
    print re.findall('</a>(.*?) \(6\) <b>(.*?)</b></dt>', s)
    #[('ADHE 313', 'Organization of Adult Basic Education Programs')]
    wmttom
    wmttom
    May 28, 2015
    16
    python正则 (?<=>)[\w, ,\(,\)]+?(?= \(|<)

    re.findall("(?<=>)[\w, ,\(,\)]+?(?= \(|<)", '<dt><a name="313"></a>ADHE 313 (6) <b>Organization of Adult Basic Education Programs</b></dt>')

    ['ADHE 313', 'Organization of Adult Basic Education Programs']
    sicongliu
    sicongliu
    OP
    May 29, 2015
    17
    楼上两个貌似都不能用
    sicongliu
    sicongliu
    OP
    May 29, 2015
    18
    sorry这个可行

    print re.findall('</a>(.*?) \(6\) <b>(.*?)</b></dt>', s)
    #[('ADHE 313', 'Organization of Adult Basic Education Programs')]
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