Testing #24156
I had this test:
@pytest.mark.parametrize("num", range(1, 10))
# this is unclear
def test_num(num):
time.sleep(0.3)
assert True
# nd even more
And it was reported as 100% coverage without comments, but 85% with comments:

This was part of the https://github.com/eleanorjboyd/inc_dec_example_repo/blob/main/inc_dec_example_test_suite/test_unit_and_pytest_combo.py repo.