pytest fixtures within fixtures

import pytest

@pytest.fixture(scope='session')
def fixture1():
   return dict()
  
@pytest.fixture
def fixture2(fixture1):
    return id(fixture1)

@pytest.fixture
def fixture3(fixture1):
    return id(fixture1)

def test_fixtures(fixture2, fixture3):
    print(fixture2)
    print(fixture3)
    assert 0