我如何删除< p> < / p为H.与python子 [英] How can i remove <p> </p> with python sub

问题描述

  mystring =This< p>< / p>< p>是测试< p>< p>< / p>< p>< / p> 
 result = mystring.sub（< p>< / p>，& nbsp;）
  

这是行不通的。

解决方案

请不要尝试使用正则表达式解析HTML。使用适当的解析模块，如 htmlparser 或 BeautifulSoup 来达到此目的。 受苦了一段简短的学习曲线，并从中获益：

1. 您的解析代码将更加健壮，处理您可能没有考虑过的角落案例使用正则表达式会失败


2. 对于未来的HTML解析/自动化任务，您将被授权更快地完成任务，因此最终时间投资也会得到回报。

您不会感到抱歉！保证利润！

I have an html file and I want to replace the empty paragraphs with a space.

mystring = "This <p></p><p>is a test</p><p></p><p></p>"
result = mystring.sub("<p></p>" , "&nbsp;")

This is not working.

解决方案

Please, don't try to parse HTML with regular expressions. Use a proper parsing module, like htmlparser or BeautifulSoup to achieve this. "Suffer" a short learning curve now and benefit:

1. Your parsing code will be more robust, handling corner cases you may not have considered that will fail with a regex
2. For future HTML parsing/munging tasks, you will be empowered to do things faster, so eventually the time investment pays off as well.

You won't be sorry! Profit guaranteed!

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