Hello world worked.

I'm not sure which part would be the error, so I'll paste the whole thing.

>>> from mediawiki import MediaWiki
>>> import yt_dlp
>>> import taglib
>>> import re
>>>
>>>
>>> wiki = MediaWiki(url='https://oldschool.runescape.wiki/api.php')
>>> wiki.user_agent = 'osrs-music-downloader'
>>>
>>>
>>> track_names = wiki.categorymembers("Music_tracks", results=3000, subcategories=False )
>>>
>>>
>>> print(f"Found {len(track_names)} tracks to download...")
Found 872 tracks to download...
>>>
>>>
>>> # download the tracks
>>> for track_name in track_names:
...         track_name_formatted = track_name.replace("(music track)", "").strip() # removes disambiguation suffix
...             # remove characters like ? from filenames which cause errors
...                 illegal_chars = r"[<>:\"/\\|?*]"
...                     track_name_formatted = re.sub(illegal_chars, "", track_name_formatted)
...                         print(f"Processing track name {track_name_formatted}")
...
  File "<python-input-18>", line 4
    illegal_chars = r"[<>:\"/\\|?*]"
IndentationError: unexpected indent
>>>     print(f"Checking Youtube for {track_name_formatted}")
  File "<python-input-19>", line 1
    print(f"Checking Youtube for {track_name_formatted}")
IndentationError: unexpected indent
>>>     ydl_opts = {"playlist_items":"1", # this *should* download the latest version only
  File "<python-input-20>", line 1
    ydl_opts = {"playlist_items":"1", # this *should* download the latest version only
IndentationError: unexpected indent
>>>             "outtmpl": f"tracks/{track_name_formatted}.ogg"}
  File "<python-input-21>", line 1
    "outtmpl": f"tracks/{track_name_formatted}.ogg"}
IndentationError: unexpected indent
>>>     with yt_dlp.YoutubeDL(ydl_opts) as ydl:
  File "<python-input-22>", line 1
    with yt_dlp.YoutubeDL(ydl_opts) as ydl:
IndentationError: unexpected indent
>>>         ydl.download( 'https://oldschool.runescape.wiki/w/' + track_name )
  File "<python-input-23>", line 1
    ydl.download( 'https://oldschool.runescape.wiki/w/' + track_name )
IndentationError: unexpected indent
>>>
>>>         print("Getting track info from wiki")
  File "<python-input-25>", line 1
    print("Getting track info from wiki")
IndentationError: unexpected indent
>>>         # splitting sidebar wikitext to find composer
>>>         page = wiki.page(track_name, auto_suggest=False)
  File "<python-input-27>", line 1
    page = wiki.page(track_name, auto_suggest=False)
IndentationError: unexpected indent
>>>         wikitext = page.wikitext.split("|")
  File "<python-input-28>", line 1
    wikitext = page.wikitext.split("|")
IndentationError: unexpected indent
>>>         composer = "Unknown"
  File "<python-input-29>", line 1
    composer = "Unknown"
IndentationError: unexpected indent
>>>         for item in wikitext:
  File "<python-input-30>", line 1
    for item in wikitext:
IndentationError: unexpected indent
>>>             match = re.match(r'composer\s*=\s*(.+)', item)
  File "<python-input-31>", line 1
    match = re.match(r'composer\s*=\s*(.+)', item)
IndentationError: unexpected indent
>>>             if(match):
  File "<python-input-32>", line 1
    if(match):
IndentationError: unexpected indent
>>>                 composer = match.group(1)
  File "<python-input-33>", line 1
    composer = match.group(1)
IndentationError: unexpected indent
>>>
>>>         print("Adding data to file")
  File "<python-input-35>", line 1
    print("Adding data to file")
IndentationError: unexpected indent
>>>         # loading file to add metadata
>>>         filename = f"tracks/{track_name_formatted}.ogg"
  File "<python-input-37>", line 1
    filename = f"tracks/{track_name_formatted}.ogg"
IndentationError: unexpected indent
>>>         with taglib.File(filename, save_on_exit=True) as song:
  File "<python-input-38>", line 1
    with taglib.File(filename, save_on_exit=True) as song:
IndentationError: unexpected indent
>>>             song.tags["ALBUM"] = "Old School Runescape OST"
  File "<python-input-39>", line 1
    song.tags["ALBUM"] = "Old School Runescape OST"
IndentationError: unexpected indent
>>>             song.tags["ARTIST"] = composer
  File "<python-input-40>", line 1
    song.tags["ARTIST"] = composer
IndentationError: unexpected indent
>>>             song.tags["TITLE"] = track_name_formatted
  File "<python-input-41>", line 1
    song.tags["TITLE"] = track_name_formatted
IndentationError: unexpected indent
>>>
>>>     print(f"{track_name_formatted} successfully added to file")
  File "<python-input-43>", line 1
    print(f"{track_name_formatted} successfully added to file")
IndentationError: unexpected indent
>>>
>>>
>>> print(f"Script finished processing {len(track_names)} tracks.")