human
Solve the following python programming problem given the following code:
@pytest.fixture(scope='module', params=list(gpu_cpu_32_16), ids=idfunc)
def backend_tests(request):
assistant
#Here is the Python program you requested.

    """Fixture that returns cpu and gpu backends for 16 and 32 bit
    """
    be = gen_backend(backend=request.param[0], datatype=request.param[1], batch_size=128, device_id=request.config.getoption('--device_id'), rng_seed=0)
    def cleanup():
        be = request.getfuncargvalue('backend_tests')
        del be
    request.addfinalizer(cleanup)
    return be