Python 我可以用正则表达式提取标题吗？

我在提取标题时遇到问题，因为我设法提取了标题 但是 它并不是只针对“标题”的，它还提取了其他内容 好 我怎样才能做一个正则表达式呢

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我尝试使用（？！>）（[^>使用xml解析器，如标准库中的，或特别是rss中的。和之间有多个标题，是否还有其他方法可以帮助将其缩小到您想要的确切标题？\n\n[A-Za-z].*\n所以我使用了这个，它选择了所有，但我只想要两个标题标记中的内容使用xml解析器，例如标准库中的，或者，或者专门用于rss。在和之间有多个标题，是否还有其他方法可以帮助将其缩小到您想要的确切标题？\n\n[A-Za-z].*\n所以我使用了这个，它选择了所有内容，但我只想将内容放在两个标题标记中

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    Mulvaney Says Trump Held Back Ukraine Aid Pending Investigation of 
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    Undercutting President Trump’s denial of a quid pro quo, the acting 
    White House chief of staff told reporters that military aid was held 
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    I

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