With import commented out:
[music_info.py] ['',
[music_info.py]  '/usr/lib/python37.zip',
[music_info.py]  '/usr/lib/python3.7',
[music_info.py]  '/usr/lib/python3.7/lib-dynload',
[music_info.py]  '/home/valeth/.local/lib/python3.7/site-packages',
[music_info.py]  '/usr/lib/python3.7/site-packages',
[music_info.py]  '/usr/lib/obs-scripting',
[music_info.py]  '/home/valeth/Workspace/Scratch/music_info/']
[music_info.py] '3.7.3 (default, Mar 26 2019, 21:43:19) \n[GCC 8.2.1 20181127]'

Trace:
[music_info.py] Traceback (most recent call last):
[music_info.py]   File "/usr/lib/python3.7/imp.py", line 314, in reload
[music_info.py]     return importlib.reload(module)
[music_info.py]   File "/usr/lib/python3.7/importlib/__init__.py", line 169, in reload
[music_info.py]     _bootstrap._exec(spec, module)
[music_info.py]   File "<frozen importlib._bootstrap>", line 630, in _exec
[music_info.py]   File "<frozen importlib._bootstrap_external>", line 728, in exec_module
[music_info.py]   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
[music_info.py]   File "/home/valeth/Workspace/Scratch/music_info/music_info.py", line 4, in <module>
[music_info.py]     import sources
[music_info.py]   File "/home/valeth/Workspace/Scratch/music_info/sources/__init__.py", line 2, in <module>
[music_info.py]     from .mpris import MPRISPlayer
[music_info.py]   File "/home/valeth/Workspace/Scratch/music_info/sources/mpris.py", line 2, in <module>
[music_info.py]     import pydbus as dbus
[music_info.py]   File "/usr/lib/python3.7/site-packages/pydbus/__init__.py", line 1, in <module>
[music_info.py]     from .bus import SystemBus, SessionBus, connect
[music_info.py]   File "/usr/lib/python3.7/site-packages/pydbus/bus.py", line 1, in <module>
[music_info.py]     from gi.repository import Gio
[music_info.py]   File "/usr/lib/python3.7/site-packages/gi/__init__.py", line 42, in <module>
[music_info.py]     from . import _gi
[music_info.py] ImportError: /usr/lib/python3.7/site-packages/gi/_gi.cpython-37m-x86_64-linux-gnu.so: undefined symbol: PyUnicode_FromFormat