Steven D'Aprano schrieb am 09.03.2018 um 12:41: > On Fri, 09 Mar 2018 10:22:23 +0100, Stefan Behnel wrote: > >> Andrew Z schrieb am 07.03.2018 um 05:03: >>> Hello, >>> with 3.6 and latest greatest lxml: >>> >>> from lxml import etree >>> >>> tree = etree.parse('Sample.xml') >>> etree.register_namespace('','http://www.example.com') >> >> The default namespace prefix is spelled None (because there is no prefix >> for it) and not the empty string. > > Is that documented somewhere?
http://lxml.de/tutorial.html#namespaces > Is there a good reason not to support "" as the empty prefix? Well, the "empty prefix" is not an "empty" prefix, it's *no* prefix. The result is not ":tag" instead of "prefix:tag", the result is "tag". But even ignoring that difference, why should the API support two ways of spelling the same thing, and thus encourage users to write diverging code? Stefan -- https://mail.python.org/mailman/listinfo/python-list