this post was submitted on 12 Jan 2024
16 points (100.0% liked)

Python

6392 readers
32 users here now

Welcome to the Python community on the programming.dev Lemmy instance!

πŸ“… Events

PastNovember 2023

October 2023

July 2023

August 2023

September 2023

🐍 Python project:
πŸ’“ Python Community:
✨ Python Ecosystem:
🌌 Fediverse
Communities
Projects
Feeds

founded 1 year ago
MODERATORS
jnovinger
erlingur
norambna
16
Help trying to extract some data (lemmy.tf)
submitted 10 months ago by [email protected] to c/python
8 comments fedilink hide all child comments
 

In my file, I have

from mutagen.id3 import ID3
tags = ID3(mp3_file)

Now if I do print(tags.keys())

It informs me that there's a TXXX:FMPS_Rating_Amarok_Score

But when I attempt to print(tags["TXXX:FMPS_Rating_Amarok_Score"])

It says there's a KeyError. What am I doing wrong?

you are viewing a single comment's thread
view the rest of the comments
[–] jnovinger 3 points 10 months ago (2 children)

Looking at the docs, it looks like it's an instance of ID3Tags, which appears to be based on couple of helper classes mutagen._util.DictProxy and mutagen._tags.Tags, where DictProxy (and its base DictMixin) provides the dict-like interface. Underneath that, it looks like it's storing the actual values in a simple dict (DictProxy.__dict) and proxying to that.

I'm not seeing anything obvious that would muck with the incoming lookup key anywhere in ID3Tags or DictProxy.__getitem__ or any of the other base classes.

I have to jump off to pack for a trip, but might try this out later in a live shell session to see if there's something odd going on with the API.

In the meantime, OP, are you positive you were looking at the same file each time? Was this in a script or in a live Python shell session?

[–] [email protected] 2 points 10 months ago

For testing purposes, same file every time, this one: https://file.coffee/u/IxKmfKfUwgPybq_vv8YJc.mp3

[–] [email protected] 2 points 10 months ago

So I tried all the different methods you mentioned but everyone fails and so when I took a deep breath, I figured that I'm probably not understanding properly how it works.

I can say this without a doubt though, the needless complexity regarding these rating tags is stupid. I don't understand why people thought this made sense. It's illogical!