add fills

tutorial/migrations/0005_alter_exercise_type.py

@@ -0,0 +1,18 @@
+# Generated by Django 6.0 on 2026-04-23 19:35
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tutorial', '0004_exercise'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='exercise',
+            name='type',
+            field=models.CharField(choices=[('mcq', '选择题'), ('sort', '代码排序'), ('fill', '代码填空')], max_length=16),
+        ),
+    ]