BeautifulSoup .prettify() 的自定义缩进宽度 [英] Custom indent width for BeautifulSoup .prettify()
问题描述
有没有办法为 .prettify() 函数定义自定义缩进宽度?从我可以从它的来源中获得 -
Is there any way to define custom indent width for .prettify() function? From what I can get from it's source -
def prettify(self, encoding=None, formatter="minimal"):
if encoding is None:
return self.decode(True, formatter=formatter)
else:
return self.encode(encoding, True, formatter=formatter)
无法指定缩进宽度.我认为这是因为 decode_contents() 函数中的这一行 -
There is no way to specify indent width. I think it's because of this line in the decode_contents() function -
s.append(" " * (indent_level - 1))
固定长度为1个空格！(为什么！！)我尝试指定 indent_level=4，结果是这样 -
Which has a fixed length of 1 space! (WHY!!) I tried specifying indent_level=4, that just results in this -
<section>
<article>
<h1>
</h1>
<p>
</p>
</article>
</section>
这看起来很愚蠢.:|
现在，我可以破解它，但我只是想确定是否有我遗漏的东西.因为这应该是一个基本功能.:-/
Now, I can hack this away, but I just want to be sure if there is anything I'm missing. Because this should be a basic feature. :-/
如果你有更好的方法来美化 HTML 代码，请告诉我.
If you have some better way of prettifying HTML codes, let me know.
推荐答案
实际上我自己处理了这个问题，可能是最黑客的方式:对结果进行后处理.
I actually dealt with this myself, in the hackiest way possible: by post-processing the result.
r = re.compile(r'^(s*)', re.MULTILINE)
def prettify_2space(s, encoding=None, formatter="minimal"):
return r.sub(r'11', s.prettify(encoding, formatter))
实际上，我在班级中用猴子补丁prettify_2space 代替了prettify.这对解决方案来说不是必不可少的，但无论如何让我们这样做，并将缩进宽度作为参数而不是将其硬编码为 2:
Actually, I monkeypatched prettify_2space in place of prettify in the class. That's not essential to the solution, but let's do it anyway, and make the indent width a parameter instead of hardcoding it to 2:
orig_prettify = bs4.BeautifulSoup.prettify
r = re.compile(r'^(s*)', re.MULTILINE)
def prettify(self, encoding=None, formatter="minimal", indent_width=4):
return r.sub(r'1' * indent_width, orig_prettify(self, encoding, formatter))
bs4.BeautifulSoup.prettify = prettify
所以:
x = '''<section><article><h1></h1><p></p></article></section>'''
soup = bs4.BeautifulSoup(x)
print(soup.prettify(indent_width=3))
...给出:
<html>
<body>
<section>
<article>
<h1>
</h1>
<p>
</p>
</article>
</section>
</body>
</html>
显然，如果你想修补 Tag.prettify 和 BeautifulSoup.prettify，你必须在那里做同样的事情.(您可能想要创建一个可以应用于两者的通用包装器，而不是重复自己.)如果有任何其他 prettify 方法，同样的处理.
Obviously if you want to patch Tag.prettify as well as BeautifulSoup.prettify, you have to do the same thing there. (You might want to create a generic wrapper that you can apply to both, instead of repeating yourself.) And if there are any other prettify methods, same deal.
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