I’m confused about how browser contexts are used. In the tutorial I was able to merely do this:

def test_get_started_link(page: Page):
    page.goto("https://playwright.dev/")

    # Click the get started link.
    page.get_by_role("link", name="Get started").click()

    # Expects page to have a heading with the name of Installation.
    expect(page.get_by_role("heading", name="Installation")).to_be_visible()

In the docs though it says I need to use a browser context to trace:

browser = chromium.launch()
context = browser.new_context()
context.tracing.start(screenshots=True, snapshots=True)
page = context.new_page()
page.goto("https://playwright.dev")
context.tracing.stop(path = "trace.zip")

How did my first snippet work? It says it uses chromium by default, is it just creating a new chromium.launch().new_context() for me?

Do I have to explicitly create a context for tracing or can I use the one that is created by default (assuming that’s even what is happening).