Parsing XML, am I over complicating things? (lemmy.tf)

submitted 10 months ago by sabreW4K3@lemmy.tf to c/python@programming.dev

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I have this XML

<subsonic-response xmlns="http://subsonic.org/restapi" status="ok" version="1.16.1" type="navidrome" serverVersion="0.50.2 (823bef54)" openSubsonic="true"><searchResult3><song id="3b9d81b5def61a60705b9b89611a217f" parent="03693dd7b835740421cc1d6a4da201f3" isDir="false" title="Good Day featuring ScHoolboy Q" album="I Am &gt; I Was" artist="21 Savage" track="11" year="2018" genre="Rap" coverArt="mf-3b9d81b5def61a60705b9b89611a217f_5c1d3668" size="9716623" contentType="audio/mpeg" suffix="mp3" duration="242" bitRate="320" path="21 Savage/I Am &gt; I Was/11 - Good Day featuring ScHoolboy Q.mp3" created="2024-01-08T16:40:53.026754212Z" albumId="03693dd7b835740421cc1d6a4da201f3" artistId="1ae1d36568c651d53f78f427f05e9766" type="music" isVideo="false" bpm="0" comment=""><genres name="Rap"></genres></song></searchResult3></subsonic-response>

Which I got from an API call

I would like to be able to interact with it so I can check the artist and then pull the id

I thought this would be as simple as calling a key on an array (wrong terminology I know. Dict?), how wrong was I?

Having done some searching, I'm in the process of figuring out how xml.etree.ElementTree works. But it feels so overly complicated for what I'm trying to do? Am I going down the wrong path?

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[-] mapto@lemmy.world 2 points 9 months ago

Actually XPATH is arguably more flexible than JSON. There's also jsonpath, but I don't think I've seen it meaningfully used

[-] sabreW4K3@lemmy.tf 1 points 9 months ago

Do you mind explaining why?

[-] mapto@lemmy.world 2 points 9 months ago* (last edited 9 months ago)

In both XML and JSON you have lists and embedding hierarchichies (I use this term to abstract away from dictionaries/maps which are not exactly represented in XML). These allow for browsing/iterating and filtering when after a particular node.

One difference is that nodes in XML are named (tags). Another thing that you have in XML and not in JSON is attributes. A good example of their use is querying by tag name, node id or class attributes in HTML (which is a loose example of XML). To do the equivalent in JSON, you need to work with keys and values which are less structured and (arguably as consequence) often missing such meta-data. HTML is a popular example, but pretty much any XML has ids and other meta tags and attributes. JSON standards typically don't and it's a long separate topic whether this is due to the characteristics of the format itself.

PS: another big difference is that XML also allows for comments, which allows to also encode intent, not only content.