How to stop pytest_bdd from performing the teardown steps after each iteration of a Gherkin Scenario Outline?

I have the following Gherkin Scenario Outline:

Scenario: Links on main page
  When I visit the main page
  Then there is a link to "<site>" on the page

Examples:
  |site             |
  |example.com      |
  |stackoverflow.com|
  |nasa.gov         |

and the respective test.py:

from pytest_bdd import scenario, given, when, then

@scenario("test.feature", "Links on main page")
def test_links():
  pass

In my conftest.py, I perform a login and logout at startup/teardown respectively:

@pytest.fixture(autouse=True, scope="function")
def login_management(driver, page_url, logindata):
  login()
  yield
  logout()

However, I don't want the browser to log out and log in between checking every link - I would rather all the links were checked on one page visit. I also would prefer to keep this tabular syntax instead of writing a dozen of steps to the tune of

And there is a link to "example.com"
And there is a link to "stackoverflow.com"
And there is a link to "nasa.gov"

Is there any way to signal that for this test only, all of the scenarios in this outline should be performed without the teardown?

Scenario Outlines are just a compact way of writing several individual scenarios. Cucumber and other testing frameworks work on the idea of isolating each individual test/scenario to prevent side effects from one test/scenario breaking other test/scenarios. If you try an bypass this you can end up with a very flaky test suite that has occasional failures which are based on the order test/scenarios are run, rather than the test/scenario failing for a legitimate reason.

So what you are trying to do breaks a fundamental precept of testing, and you really should avoid doing that.

If you want to be more efficient testing your links, group them together and give them a name. Then test for them in a single step and get rid of your scenario outline e.g.

Scenario: Main page links
  When I visit the main page
  Then I should see the main page links

Then "I should see the main page links" do
  expect(page).to have_link("example.com")
  expect(page).to have_link("nasa.gov")
  ...
end

Now you have one simple scenario that will just login once and run much faster.

NOTE: examples are in ruby (ish), but the principle applies no matter the language.

In general I would suggest avoiding scenario outlines, you really don't need to use them at all.