Re: [Twisted-Python] regarding xml elements

On Fri, 28 Mar 2008 22:59:21 -0000, glyph@divmod.com wrote:

On 02:55 pm, exarkun@divmod.com wrote:

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On Fri, 28 Mar 2008 10:51:10 -0400, Phil Christensen wrote:

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If it's so bad that you'd tell someone not to use it, why isn't it deprecated?

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Because it would take a lot of work to deprecate, and there are a lot of other things people are working on that are deemed more important.

Also because there isn't a complete consensus on how terrible it is. If you are doing advanced XML processing, it definitely isn't the best choice, because it's missing a bunch of features and it has some idiosyncratic behavior. However, it is conveniently available without adding another dependency and it supports simple use-cases OK; this is still a problem with other XML libraries in Python, especially DOM libraries. (For example, incompatibilities between the various lxml implementations.)

Here's an example of a behavior it has which probably isn't going to change any time soon: >>> from twisted.web.microdom import parseString >>> s = '<div><span>hello</span> <span>world</span></div>' >>> parseString(s).toxml() '<?xml version="1.0"?><div><span>hello</span><span>world</span></div>' >>> So if you need such advanced XML features as correct whitespace handling, steer clear. ;) Jean-Paul