def create_bulk_ratings(rows):
fields = [Rating.udemy_id, Rating.created, Rating.rating_score]
count = len(rows)
print('creating {} rows'.format(count))
database = SqliteDatabase('ratings.db')
with database.atomic():
step_range = 250 #scale down as needed
for step in range(0, count, step_range):
Rating.insert_many(
rows[step:step+step_range],
fields=fields
).execute()
print('done creating rows')
