How do I set environment variables in a pytest fixture with the MonkeyPatch context manager?

I'm not using classes or test cases I'm just using pytest functions (want to keep it that way).

This does not work:

@pytest.fixture(scope="function")def set_env():    with MonkeyPatch.context() as mp:        mp.setenv("VAR_ONE", "123")        mp.setenv("VAR_TWO", "test")def test_blah(set_env):    print(os.environ["VAR_ONE"])    print(os.environ["VAR_TWO"])

This does:

@pytest.fixture(scope="function")def set_env(monkeypatch):    monkeypatch.setenv("VAR_ONE", "123")    monkeypatch.setenv("VAR_TWO", "test")def test_blah(monkeypatch, set_env):    print(os.environ["VAR_ONE"])    print(os.environ["VAR_TWO"])

I was hoping to avoid passing around monkeypatch fixtures like this. I thought I could use MonkeyPatch to abstract this behind a single fixture. Am I misunderstanding MonkeyPatch as a context manager?

The whole pytest fixture magic thing doesn't play nice with type hinting so I really want to minimize the fixtures I need to pass around (while still not using test cases and classes).