[Python] How to use transaction with "async" functions in Django?

When async def call_test(request): called async def test(): as shown below (I use Django==3.1.7):

async def test():
for _ in range(0, 3):
print("Test")

async def call_test(request):

await test() # Here

return HttpResponse("Call_test")


There was no error displaying the proper result below on console:

Test
Test
Test


But, when I put @transaction.atomic() on async def test(): as shown below:

@transaction.atomic # Here
async def test():
for _ in range(0, 3):
print("Test")

# ...


The error below occurred:

django.core.exceptions.SynchronousOnlyOperation: You cannot call this from an async context - use a thread or sync_to_async.
​

So, I put @sync_to_async under @transaction.atomic() as shown below:

@transaction.atomic
@sync_to_async # Here
async def test():
for _ in range(0, 3):
print("Test")

# ...


But, the same error below occurred:

django.core.exceptions.SynchronousOnlyOperation: You cannot call this from an async context - use a thread or sync_to_async.
​

So, I put @sync_to_async on @transaction.atomic() as shown below:

@sync_to_async # Here
@transaction.atomic
async def test():
for _ in range(0, 3):
print("Test")

# ...


But, other error below occurred:

RuntimeWarning: coroutine 'test' was never awaited handle = None # Needed to break cycles when an exception occurs. RuntimeWarning: Enable tracemalloc to get the object allocation traceback
​

So, how can I use transaction with async functions in Django?

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