python - 选择用\n 分隔的 标签

Question

我正在使用 Python 来解析/清理 html 文档，但它的格式很糟糕。例如

<p>\n<p>\n    Python initially inherited its parsing from C.  While this has been\ngenerally useful, there are some remnants which have been less useful\nfor Python, and should be eliminated.</p>\n</p>

我想转换 <p>\n<p>至 <p>但我似乎无法定位 \n或 <p> 之间的任意数量的空格标签。

到目前为止我尝试了什么

html = "<p>\n<p>\n    Python initially inherited its parsing from C.  While this has been\ngenerally useful, there are some remnants which have been less useful\nfor Python, and should be eliminated.</p>\n</p>"
html = re.sub(re.compile("<p>\\n+<p>", "<p>", html))

然而，这失败了。

Answer 1

使用以下方法:

html = "<p>\n<p>\n    Python initially inherited its parsing from C.  While this has been\ngenerally useful, there are some remnants which have been less useful\nfor Python, and should be eliminated.</p>\n</p>"
html = re.sub(r'<p>[\n\s]+<p>[\n\s]*|<(\/)p>[\n\s]+<\/p>[\n\s]*', r"<\1p>", html)

print(html)

输出:

<p>Python initially inherited its parsing from C.  While this has been
generally useful, there are some remnants which have been less useful
for Python, and should be eliminated.</p>

替换 r"<\1p>"暗示结束标记符号 /来自第一个捕获组 <(\/)p>如果匹配