pytest: parametrized parameters with spaces are not executable individually

If the parameters of the parametrize are spaces, then the generated tests are not executable individually. For instance, i just modify the example of the doc, by inserting a space in the test_input values:

@pytest.mark.parametrize("test_input,expected", [
    ("3 5", 8),
    ("2 4", 6),
    ("6 9", 42),
])
def test_eval(test_input, expected):
    assert eval(test_input.replace(' ', '+')) == expected

Execution:

pytest test.py
test.py::test_eval[3 5-8] PASSED
test.py::test_eval[2 4-6] PASSED
test.py::test_eval[6 9-42] FAILED

Note that the test ids contain spaces, so if I need to run just one test:

pytest test.py::test_eval[3 5-8]

I get an error cause the test id is interpreted as two tests test.py::test_eval[3 and 5-8] that of course are not valid. How can I solve this? I guess a solution could be replace the space with a special character like \s into the test nodeid. Is there a way to modify the item.nodeid of a test? Thanks