How to run teardown function / fixture after parametrize

Question

I am trying to run teardown function / fixture for whole parametrization of one testcase. So I want to have in my conftest.py file something like this

@pytest.fixture(autouse=True, scope="parametrization")
def parametrization_scope():
    print("First run of parametrization fixture")
    # Executing 100 parametrizations
    yield
    print("Yield run of parametrization fixture")

and in my test.py something like

@pytest.mark.parametrize(n-params)
# run initiate fixture here of parametrization
def test():
    # executing n number of times

# run yield fixture here of parametrization

Answer 1

You could use a test class to workaround the missing "parametrization" scope like this:

import pytest

@pytest.fixture(scope="class")
def foo():
    print("setup")
    yield None
    print("teardown")

class TestSum:
    @pytest.mark.parametrize(
        "a,b,c",
        [(3, 5, 8), (2, 4, 6)],
    )
    def test_eval(self, a, b, c, foo):
        assert a + b == c

If only the TestSum class uses the fixture foo, you could even place the definition of foo inside the class.