fixed mutable argument bug in the source dict of SourceAttribute

src/music_kraken/database/database.py

@@ -329,6 +329,7 @@ class Database:
 
         for source in artist.source_list:
             source.type_enum = SourceTypes.ARTIST
+            source.add_song(artist)
             self.push_source(source)
 
     def pull_lyrics(self, song_ref: Reference = None, lyrics_ref: Reference = None) -> List[Lyrics]:

src/music_kraken/database/objects/song.py

@@ -362,10 +362,15 @@ class Artist(DatabaseObject, SourceAttribute, MetadataAttribute):
             main_songs: List[Song] = None,
             feature_songs: List[Song] = None,
             main_albums: List[Album] = None,
+            album_type: str = None,
             notes: str = None
     ):
         DatabaseObject.__init__(self, id_=id_)
 
+        """
+        TODO implement album type and notes
+        """
+        self.album_type = album_type
         self.notes = notes
 
         if main_albums is None:
@@ -391,6 +396,9 @@ class Artist(DatabaseObject, SourceAttribute, MetadataAttribute):
     def __repr__(self):
         return self.__str__()
 
+    def __eq__(self, __o: object) -> bool:
+        return self.id_ == __o.id_
+
     def get_features(self) -> Album:
         feature_release = Album(
             title="features",

src/music_kraken/database/objects/source.py

@@ -88,7 +88,12 @@ class SourceAttribute:
     This is a class that is meant to be inherited from.
     it adds the source_list attribute to a class
     """
-    _source_dict: Dict[object, List[Source]] = {page_enum: list() for page_enum in SourcePages}
+    _source_dict: Dict[object, List[Source]]
+
+    def __new__(cls, **_):
+        new = object.__new__(cls)
+        new._source_dict = {page_enum: list() for page_enum in SourcePages}
+        return new
 
     def add_source(self, source: Source):
         """