Django: Remove duplicate objects where there is more than one field to compare. Keep earliest entry.

remove_duplicates.py

from django.db.models import Count, Min

unique_fields = ['field_1', 'field_2']

duplicates = (
    MyModel.objects.values(*unique_fields)
    .order_by()
    .annotate(min_id=Min('id'), count_id=Count('id'))
    .filter(count_id__gt=1)
)

for duplicate in duplicates:
    (
        MyModel.objects
        .filter(**{x: duplicate[x] for x in unique_fields})
        .exclude(id=duplicate['min_id'])
        .delete()
    )