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Python如何截取特定字符串?

  •  
  •   ihciah 2012-06-14 19:44:53 +08:00 5306 次点击
    这是一个创建于 4865 天前的主题,其中的信息可能已经有所发展或是发生改变。
    例子:
    <html>
    <head>
    <title>Test</title>
    </head>
    <body>
    <p>输出我</p>
    <p>我来捣乱</p>
    </body>
    </html>

    用Pyhton提取其中的'输出我'。输出第一个<p>和第一个</p>之间的内容。

    谢谢!!
    13 条回复    1970-01-01 08:00:00 +08:00
    INT21H
        1
    INT21H  
       2012-06-14 19:47:46 +08:00   1
    >>> from BeautifulSoup import BeautifulSoup
    >>> html="""<html>
    ... <head>
    ... <title>Test</title>
    ... </head>
    ... <body>
    ... <p>输出我</p>
    ... <p>我来捣乱</p>
    ... </body>
    ... </html>"""
    >>> bs = BeautifulSoup(html)
    >>> bs.p
    <p>输出我</p>
    >>> bs.p.contents
    [u'\u8f93\u51fa\u6211']
    >>>
    vfasky
        2
    vfasky  
       2012-06-14 20:56:33 +08:00
    <code>
    html = '''<html>
    <head>
    <title>Test</title>
    </head>
    <body>
    <p>输出我</p>
    <p>我来捣乱</p>
    </body>
    </html>'''

    for t in html.split('</p>') :
    print t.replace('<p>','')
    break;
    </code>
    vfasky
        3
    vfasky  
       2012-06-14 20:58:41 +08:00   1
    muzuiget
        4
    muzuiget  
       2012-06-14 21:03:12 +08:00
    关键词:正则表达式,DOM。
    goofansu
        5
    goofansu  
       2012-06-14 21:05:13 +08:00
    最近也在玩,beautifulsoup很棒
    yibin001
        6
    yibin001  
       2012-06-14 21:16:34 +08:00
    beautifulsoup还真是个神器
    likuku
        7
    likuku  
       2012-06-14 21:29:06 +08:00   1
    #!/usr/bin/env python
    # encoding: utf-8
    """
    html.py

    Created by likuku on 2012-06-14.
    Copyright (c) 2012 __MyCompanyName__. All rights reserved.
    """

    import sys
    import os

    html="""
    <html>
    <head>
    <title>Test</title>
    </head>
    <body>
    <p>输出我</p>
    <p>我来捣乱</p>
    </body>
    </html>
    """


    def main():
    for text in html.split('\n'):
    if text.find('<p>') != -1:
    tmp = text.replace('</p>','').replace('<p>','')
    print tmp
    break

    if __name__ == '__main__':
    main()
    aa88kk
        8
    aa88kk  
       2012-06-14 21:51:15 +08:00   1
    用正则:
    m = re.search('<p>(.*?)<\/p>', s, re.S)
    cute
        9
    cute  
       2012-06-14 21:57:50 +08:00   1
    start = s.find('<p>')+ len('<p>')
    end = s.find('</p>', start)
    print s[start:end]
    ihciah
        10
    ihciah  
    OP
       2012-06-14 23:38:09 +08:00
    谢谢各位!!~~~~~~~~
    ling0322
        11
    ling0322  
       2012-06-18 21:46:38 +08:00
    其实有一个比beautifulsoap更霸气的, 叫pyQuery
    binux
        12
    binux  
       2012-06-18 21:49:04 +08:00
    beautifulsoup太费内存了
    chairo
        13
    chairo  
       2012-06-18 22:25:00 +08:00
    libxml路过
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