使用正则表达式查找包含重复单词的句子

Question

我尝试过以下方法。

import re
sentences = "Glitches happened happened happened. Things go back to normal again."
print([re.findall(r"(\w+)\s\1", s) for s in sentences.split('.')])

我想知道如何打印包含重复单词的整个句子（们）。

- rky

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那么你的问题是如何使正则表达式匹配_sentence_？ - John Gordon

Answer 1

这里有一个选项，使用列表推导和re.search：

inp = "Glitches happened happened happened. Things go back to normal again."
sentences = re.split(r'(?<=\.)\s+', inp)
duplicates = [s for s in sentences if re.search(r'\b(\S+)\b(?=.*\b\1\b)', s)]
print(duplicates)

这将打印：

['Glitches happened happened happened.']

- Tim Biegeleisen

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谢谢。这正是我在寻找的！ - rky

Answer 2

请尝试使用Python的re库中的re.search函数，如下所示。

>>> import re
>>> sentences = "Glitches happened happened happened. Things go back to normal again."
>>> print ( [el for el in sentences.split('. ') if re.search(r'\b(\w+)\s+\1\b', el)] )
    ['Glitches happened happened happened']

- RavinderSingh13

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完美。谢谢！ - rky

Answer 3

作为解决方法，您可以尝试以下操作：

import re

sentences = "Glitches happened happened happened. Things go back to normal again. And once again again again."
print([s for s in sentences.split('.') if re.search(r"\b(\w+)\s+\1\b", s)])

结果：

['Glitches happened happened happened', ' And once again again again']

- Renaud