these are unnecessary

run.py

 #!/usr/bin/env python3
 # ~*~ coding: utf-8 ~*~
 #-
-# Copyright © 2017
+# Copyright © 2017, 2021
 #       mirabilos <m@mirbsd.org>
+# Copyright © 2017
 #       Dominik George <nik@naturalnet.de>
 #
 # Provided that these terms and disclaimer and all copyright notices
@@ -20,9 +21,7 @@
 # damage or existence of a defect, except proven that it results out
 # of said person’s immediate fault when using the work as intended.
 
-import os.path
 import sys
-sys.path.append(os.path.join(os.path.dirname(__file__), 'src'))
 
 import mmllib.cmds
 

test.py

@@ -19,10 +19,6 @@
 # damage or existence of a defect, except proven that it results out
 # of said person’s immediate fault when using the work as intended.
 
-#import os.path
-#import sys
-#sys.path.append(os.path.join(os.path.dirname(__file__), 'src'))
-
 from test.test_musicxml import *
 from test.test_parser import *
 from test.test_playlist import *