Locators, Actions & Assertions — quiz

A login form has `<button>Sign in</button>` with no test id and no stable class. Which Playwright Python locator is the most resilient and idiomatic?

• page.locator('button.btn-primary')
• page.get_by_role('button', name='Sign in') — Python uses snake_case method names and keyword arguments; the role-based locator is the recommended priority because it matches how a user (and a screen reader) finds the element
• page.locator('xpath=//button[1]')
• page.evaluate('document.querySelector("button")')