Python 正则表达式替换引号中的文本，引号本身除外

Question

例如，我有一个测试字符串

content = 'I opened my mouth, "Good morning!" I said cheerfully'

我想使用正则表达式删除双语音标记之间的文本，而不是语音标记本身。所以它会返回

'I opened my mouth, "" I said cheerfully'

我正在使用下面的代码

content = re.sub(r'".*"'," ",content)

但这也消除了双重语音标记。我应该使用什么模式来保留语音标记但删除其中的文本。

Answer 1

使用'""'作为替换字符串:

>>> content = 'I opened my mouth, "Good morning!" I said cheerfully'
>>> content = re.sub(r'".*"', '""', content)
>>> print(content)
I opened my mouth, "" I said cheerfully

BTW，.* 尽可能匹配(贪心)。要匹配非贪婪时尚，请使用 .*? 或 [^"]*。

>>> content =  'I opened my mouth, "Good morning!" I said cheerfully. "How is everyone?"'
>>> content = re.sub(r'".*?"', '""', content)
>>> print(content)
I opened my mouth, "" I said cheerfully. ""