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Re: lxml parsing with validation and target?

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From: rob...@reportlab.com (Robin Becker)
Newsgroups: comp.lang.python
Subject: Re: lxml parsing with validation and target?
Date: Wed, 3 Nov 2021 14:59:29 +0000
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by: Robin Becker - Wed, 3 Nov 2021 14:59 UTC

On 02/11/2021 12:55, Robin Becker wrote:
> I'm having a problem using lxml.etree to make a treebuilding parser that validates; I have test code where invalid xml
> is detected and an error raised when the line below target=ET.TreeBuilder(), is commented out.
>
..........

I managed to overcome this problem by utilizing the non-targeted parser with returns an _ElementTree object. I can then
convert to tuple tree using code like this

> class TT:
> def __init__(self):
> pass
>
> def __call__(self,tree):
> if not tree: return
> return self.maketuple(next(tree.iter()))
>
> def maketuple(self,e):
> return (e.tag,e.attrib or None,self.content(e),e.sourceline)
>
> def content(self,e):
> t = e.text
> kids = e.getchildren()
> if len(kids)==0 and t is None:
> return t
> else:
> r = [].append
> if t is not None: r(t)
> for c in kids:
> r(self.maketuple(c))
> t = c.tail
> if t is not None:
> r(t)
> return r.__self__

--
Robin Becker

The bogosity meter just pegged.

devel / comp.lang.python / Re: lxml parsing with validation and target?

Subject	Author
Re: lxml parsing with validation and target?	Robin Becker