Save all data in database with one query in Django - python-3.x

Question

I'm a new Django programmer. I write a API call with rest_framework in Django. when call this API, my program connect to KUCOIN and get list of all cryptocurrency. I want save symbol and name this cryptocurrencies in database. For save data to database, I use 'for loop' and in every for loop iteration, I query to database and save data. my code :
for currencie in currencies:
name = currencie['name']
symbol = currencie['symbol']
active = (False, True)[symbol.endswith('USDT')]
oms = 'kucoin'
try:
obj = Instrument.objects.get(symbol=symbol, oms=oms)
setattr(obj, 'name', name)
setattr(obj, 'active', active)
obj.save()
except Instrument.DoesNotExist:
obj = Instrument(name=name, symbol=symbol,
active=active, oms=oms)
obj.save()
query to database in every for loop iteration have problem ,How can I solve this problem?
Exist any way in Django to save data in database in with one query.
All my code:
class getKucoinInstrument(APIView):
def post(self, request):
try:
person = Client.objects.filter(data_provider=True).first()
person_data = ClientSerializer(person, many=False).data
api_key = person_data['api_key']
api_secret = person_data['secret_key']
api_passphrase = person_data['api_passphrase']
client = kucoin_client(api_key, api_secret, api_passphrase)
currencies = client.get_symbols()
for currencie in currencies:
name = currencie['name']
symbol = currencie['symbol']
active = (False, True)[symbol.endswith('USDT')]
oms = 'kucoin'
try:
obj = Instrument.objects.get(symbol=symbol, oms=oms)
setattr(obj, 'name', name)
setattr(obj, 'active', active)
obj.save()
except Instrument.DoesNotExist:
obj = Instrument(name=name, symbol=symbol,
active=active, oms=oms)
obj.save()
return Response({'response': 'Instruments get from kucoin'}, status=status.HTTP_200_OK)
except Exception as e:
print(e)
return Response({'response': 'Internal server error'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
Thank you for you help.

Answer 1

Yes! Take a look at bulk_create() documentation. https://docs.djangoproject.com/en/4.0/ref/models/querysets/#bulk-create
If you have a db that supports ignore_conflicts parameter (all do, except Oracle), you can do this:
new_currencies = []
for currencie in currencies:
name = currencie['name']
symbol = currencie['symbol']
active = (False, True)[symbol.endswith('USDT')]
oms = 'kucoin'
new_currencies.append(Instrument(name=name, symbol=symbol,
active=active, oms=oms))
Instrument.objects.bulk_create(new_currencies, ignore_conflicts=True)
1-liner:
Instrument.objects.bulk_create(
[
Instrument(
name=currencie['name'], symbol=currencie['symbol'],
active=currencie['symbol'].endswith('USDT'), oms='kucoin'
)
for currencie in currencies
],
ignore_conflicts=True
)