added more attributes to artist model

nishaespera_music/homepage/models.py

@@ -4,6 +4,11 @@ from django.db import models
 class Artist(models.Model):
     artist_name = models.CharField(max_length = 50)
     monthly_listeners = models.IntegerField(default = 0)
+    birth_name = models.CharField(max_length = 50, null=True, blank=True)
+    bio = models.CharField(max_length = 700, null=True, blank=True)
+
+    def __str__(self):
+        return self.artist_name
 
 class Album(models.Model):
     album_name = models.CharField(max_length = 50)