如何从 HTML 中提取嵌套表格？

发布于 2024-07-22 20:25:40 字数 680 浏览 6 评论 0 原文

我有一个 HTML 文件（以 utf-8 编码）。我用codecs.open()打开它。文件架构是：

<html>
// header
<body>
  // some text
  <table>
    // some rows with cells here
    // some cells contains tables
  </table>
  // maybe some text here
  <table>
    // a form and other stuff
  </table>
  // probably some more text
</body></html>

我只需要检索第一个表（丢弃带有表单的表）。省略第一个 之前和相应

 之后的所有输入。   有些单元格还包含段落、粗体和脚本。   主表的每一行嵌套表不超过一个。

如何提取它以获取行列表，其中每个元素保存普通（unicode 字符串）单元格的数据以及每个嵌套表的行列表？嵌套层数不超过 1 层。

我尝试了 HTMLParse、PyParse 和 re 模块，但无法正常工作。我对 Python 还很陌生。

原文

I have an HTML file (encoded in utf-8). I open it with codecs.open(). The file architecture is:

<html>
// header
<body>
  // some text
  <table>
    // some rows with cells here
    // some cells contains tables
  </table>
  // maybe some text here
  <table>
    // a form and other stuff
  </table>
  // probably some more text
</body></html>

I need to retrieve only first table (discard the one with form). Omit all input before first <table> and after corresponding </table>. Some cells contains also paragraphs, bolds and scripts. There is no more than one nested table per row of main table.

How can I extract it to get a list of rows, where each elements holds plain (unicode string) cell's data and a list of rows for each nested table? There's no more than 1 level of nesting.

I tried HTMLParse, PyParse and re module, but can't get this working.
I'm quite new to Python.

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樱＆纷飞 2024-07-29 20:25:41

您可能喜欢lxml。我不确定我是否真的理解你想用这个结构做什么，但也许这个例子会有所帮助......

import lxml.html

def process_row(row):
    for cell in row.xpath('./td'):
       inner_tables = cell.xpath('./table')
       if len(inner_tables) < 1:
           yield cell.text_content()
       else:
           yield [process_table(t) for t in inner_tables]

def process_table(table):
    return [process_row(row) for row in table.xpath('./tr')]

html = lxml.html.parse('test.html')
first_table = html.xpath('//body/table[1]')[0]

data = process_table(first_table))

You may like lxml. I'm not sure I really understood what you want to do with that structure, but maybe this example will help...

import lxml.html

def process_row(row):
    for cell in row.xpath('./td'):
       inner_tables = cell.xpath('./table')
       if len(inner_tables) < 1:
           yield cell.text_content()
       else:
           yield [process_table(t) for t in inner_tables]

def process_table(table):
    return [process_row(row) for row in table.xpath('./tr')]

html = lxml.html.parse('test.html')
first_table = html.xpath('//body/table[1]')[0]

data = process_table(first_table))

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