如何基于Python中的部分匹配从文本中删除子字符串？

Question

我有一长串文本，其中包含要基于部分匹配（90％）删除的子文本。

string = "Adam is a boy who lives in Michigan.  
        He loves to eat apples and oranges. 
        He also enjoys playing with his dog and cat. 
        Adam is a happy boy."

substring = "He loves to apple oranges"

我想回来

"Adam is a boy who lives in Michigan.  
 He also enjoys playing with his dog and cat. 
 Adam is a happy boy."

在子字符串中没有出现“吃”和“和”这两个字，但我想删除整个句子“他喜欢吃苹果和橘子”。我不太确定该怎么做。谢谢！

Answer 1

您可以使用difflib.SequenceMatcher：

from difflib import SequenceMatcher
'\n'.join(s for s in string.splitlines() if SequenceMatcher(' '.__eq__, s, substring).ratio() < 0.6)

这将返回：

Adam is a boy who lives in Michigan.
He also enjoys playing with his dog and cat.
Adam is a happy boy.

演示：https://ideone.com/twDu1r

Answer 2

string = string.replace(substring,'')

这会将字符串中的子字符串替换为空（""）