[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Stefan Behnel added the comment: This is a tricky decision. lxml, for example, validates user input, but that's because it has to process it anyway and does it along the way directly on input (and very efficiently in C code). ET, on the other hand, is rather lenient about what it allows user

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

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[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Ben Spiller added the comment: To help anyone else struggling with this bug, based on https://lsimons.wordpress.com/2011/03/17/stripping-illegal-characters-out-of-xml-in-python/ the best workaround I've currently found is to define this: def escape_xml_illegal_chars(unicodeString, replaceWit

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Ben Spiller added the comment: Hi it's been a few years now since this was reported and it's still a problem, any chance of a fix for this? The API gives the impression that if you pass python strings to the XML API then the library will generate valid XML. It takes care of the charset/encod

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Martin Panter added the comment: Issue 12129 is open about this sort of problem with xml.dom (which would also apply to minidom I think). If someone wants to suggest a clarification for the Element Tree documentation, that might work. But I tend to agree about not bogging down the implementati

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

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[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

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[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

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[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Changes by Florent Xicluna : -- assignee: effbot -> components: +XML versions: +Python 3.4 -Python 2.7, Python 3.2 ___ Python tracker ___

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

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[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Mark Lawrence added the comment: In msg89685 it's stated that this behaviour is deliberate for ET. Could somebody please comment on the minidom aspects. -- nosy: +BreamoreBoy ___ Python tracker __

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Vetoshkin Nikita added the comment: What about this example? >>> from xml.dom import minidom >>> doc = minidom.Document() >>> el = doc.createElement("Test") >>> el.setAttribute("with space", "False") >>> doc.appendChild(el) >>> >>> #nahhh ... minidom.parseString(doc.toxml()) Traceback (most rec

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Denis S. Otkidach added the comment: Here is a regexp I use to clean up text (note, that I don't touch "compatibility characters" that are also not recommended in XML; some other developers remove them too): # http://www.w3.org/TR/REC-xml/#NT-Char # Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] |

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Andy added the comment: I'm also of the opinion that this would be a valuable feature to have. I think it's a reasonable expectation that an XML library produces valid XML. It's particularly strange that ET would output XML that it can't itself read. Surely the job of making the input valid fall

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Denis S. Otkidach added the comment: Every blog engine I've even seen so far pass through comments from untrusted users to RSS/Atom feeds without proper validation causing broken XML in feeds. Sure, this is a bug in web applications, but DOM manipulation packages should prevent from creation bro

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

Fredrik Lundh added the comment: For ET, that's very much on purpose. Validating data provided by every single application would kill performance for all of them, even if only a small minority would ever try to serialize data that cannot be represented in XML. -- __

[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

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[issue5166] ElementTree and minidom don't prevent creation of not well-formed XML

New submission from Denis S. Otkidach : ElementTree and minidom allow creation of not well-formed XML, that can't be parsed: >>> from xml.etree import ElementTree >>> element = ElementTree.Element('element') >>> element.text = u'\0' >>> xml = ElementTree.tostring(element, encoding='utf-8') >>> E