Renaming mp3 files with random ending in filename

I have a folder with files named like this “artist – track XX XXX.mp3” what I’am trying to do is have the files renamed to just “artist – track.mp3”

the last part of the file will always begin one of these:
[1B, 2B, 3B, 4B, 5B, 6B, 7B, 8B, 9B, 10B, 11B, 12B, 1A, 2A, 3A, 4A, 5A, 6A, 7A, 8A, 9A, 10A, 11A, 12A]

so how do I remove the “XX XXX” and keep the rest?

import re, glob, os

os.chdir("C:\Somepath")

for filename in glob.glob("**/*.mp3", recursive = True):
    filename = re.match(r"(?P<filename>w+).*.(?P<ext>.+)", filename)
    filename = "{}.{}".format(filename.group('filename'), filename.group('ext'))
    print(filename)

which just outputs only the first artistname from the first file:
artist.mp3
artist.mp3
artist.mp3

What is the rest that I am missing here, simply can’t figure out how to solve this..

Answer

Your regexp group matching the filename only allows word (w) characters, so it stops at the first space. Instead of

filename = re.match(r"(?P<filename>w+).*.(?P<ext>.+)", filename)

try

filename = re.match(r"(?P<filename>.+)s+d{1,2}[AB].*.(?P<ext>.+)", filename)

This will make the filename group match everything up to the first “XX”. The latter consists of whitespace followed by one or two digits followed by A or B.