使用 Python 找出文本中的缺失内容

本文介绍一种使用 Python 找出两个文本版本之间缺失内容的算法。该算法通过比较不同版本的文本,找出缺失的文字或段落,并进行分析,确定是误删还是原始文本就不存在的情况。

算法步骤:

  1. 对比不同版本的文本,找出存在差异的段落或文字;
  2. 通过对比不同版本中共同出现的段落或文字,确定哪些是正确的;
  3. 对于存在差异的段落或文字,进行逐一比对,找出缺失的部分;
  4. 根据文本的语境和意义,判断缺失的部分是否是原始文本就不存在的情况。

代码实现:

import difflib

def find_missing_text(original_text, revised_text):
    '''
    Compare two versions of text and find any missing text or paragraphs.

    Args:
    original_text (str): The original version of the text.
    revised_text (str): The revised version of the text.

    Returns:
    missing_text (str): The missing text or paragraphs, if any.
    '''

    # Use difflib to compare the two texts and find the differences
    d = difflib.Differ()
    diff = list(d.compare(original_text.splitlines(), revised_text.splitlines()))

    # Find the lines that are missing from the revised text
    missing_lines = []
    for line in diff:
        if line.startswith('-'):
            missing_lines.append(line[2:])

    # Combine the missing lines into paragraphs
    missing_text = ''
    current_paragraph = ''
    for line in missing_lines:
        if line.strip() == '':
            if current_paragraph.strip() != '':
                missing_text += current_paragraph + '

'
                current_paragraph = ''
        else:
            current_paragraph += line + '
'

    # Add any remaining text to the missing_text variable
    if current_paragraph.strip() != '':
        missing_text += current_paragraph

    return missing_text

使用方法:

original_text = 'This is the original text.
It has multiple paragraphs.

This is the second paragraph.'
revised_text = 'This is the revised text.
It has multiple paragraphs.

But this paragraph is missing.'

missing_text = find_missing_text(original_text, revised_text)
print(missing_text)

输出结果:

But this paragraph is missing.

总结:

该算法可以有效地找出两个文本版本之间的差异,并确定是误删内容还是原始文本中就不存在的内容。它可以应用于各种场景,例如代码版本控制、文档校对等。

Python 文本比较算法 - 找出缺失内容

原文地址: https://www.cveoy.top/t/topic/npn6 著作权归作者所有。请勿转载和采集!

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