Python如何截取特定字符串？ - V2EX
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ihciah
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Python如何截取特定字符串？

  •   
  •   ihciah Jun 14, 2012 5618 views
    This topic created in 5082 days ago, the information mentioned may be changed or developed.
    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！！
  • title
  • HTML
  • head
    13 replies    1970-01-01 08:00:00 +08:00
    INT21H
        1
    INT21H  
       Jun 14, 2012   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  
       Jun 14, 2012
    <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  
       Jun 14, 2012   1
    https://gist.github.com/2930119
    muzuiget
        4
    muzuiget  
       Jun 14, 2012
    关键词：正则表达式，DOM。
    goofansu
        5
    goofansu  
       Jun 14, 2012
    最近也在玩，beautifulsoup很棒
    yibin001
        6
    yibin001  
       Jun 14, 2012
    beautifulsoup还真是个神器
    likuku
        7
    likuku  
       Jun 14, 2012   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  
       Jun 14, 2012   1
    用正则:
    m = re.search('<p>(.*?)<\/p>', s, re.S)
    cute
        9
    cute  
       Jun 14, 2012   1
    start = s.find('<p>')+ len('<p>')
    end = s.find('</p>', start)
    print s[start:end]
    ihciah
        10
    ihciah  
    OP
       Jun 14, 2012
    谢谢各位！！~~~~~~~~
    ling0322
        11
    ling0322  
       Jun 18, 2012
    其实有一个比beautifulsoap更霸气的, 叫pyQuery
    binux
        12
    binux  
       Jun 18, 2012
    beautifulsoup太费内存了
    chairo
        13
    chairo  
       Jun 18, 2012
    libxml路过
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