How to add arguments to the function passed in request.addfinalizer() of pytest?

Question

I am writing a test suite with pytest. It looks like this.

@pytest.fixture
def f(request):
    ...
    def fin(arg):
        ...
        return

    request.addfinalizer(fin)

I am wondering if 'arg' would be taken into account inside off 'addfinalizer'? Or is it a way to do that?

Answer 1

use a functools.partial or a lambda

Answer 2

You can pass a lambda like this:

@pytest.fixture
def f(request):
    ...
    def fin(arg):
        ...
        return

    request.addfinalizer(lambda: fin(some_arg_here))