如何从 python 中的字符串中删除子字符串“-”，但保留“-”子字符串？

Question

示例：

string = " a lot of text ... protective equip- ment ... a lot of text - with similar broken words like simple appli- cations ..."

我需要获取相同的文本，但是 设备 变成了 设备，应用程序 成为 应用程序 。 谢谢

Answer 1

如果要删除 2 个单词之间的 '- '，可以使用以下正则表达式：

>>> import re
>>> string = " a lot of text ... protective equip- ment ... a lot of text - with similar broken words like simple appli- cations ..."
>>> re.sub(r"(\w+)- (\w+)", r"", string)
' a lot of text ... protective equipment ... a lot of text - with similar broken words like simple applications ...'

Answer 2

一个正则表达式需要一个连字符后跟 space，但如果它前面有一个 space，则拒绝它，将达到目的：

import re
string = "a lot of text ... protective equip- ment ... a lot of text - with similar broken words like simple appli- cations ..."
print(re.sub(r"(?<! )- ", "", string))

输出：

a lot of text ... protective equipment ... a lot of text - with similar broken words like simple applications ...