I am trying to parse a website using selenium. The website is here:

So in order to be able to interact with the button we must first select the parent of the shadow root, which is the div element with id=usercentrics-root, and then we can select the button and click it:

driver.execute_script('''return document.querySelector("#usercentrics-root").shadowRoot.querySelector("button[data-testid='uc-accept-all-button']")''').click()

Alternatively, a more human readable code:

shadow_parent = driver.find_element(By.CSS_SELECTOR, '#usercentrics-root')
outer = driver.execute_script('return arguments[0].shadowRoot', shadow_parent)
outer.find_element(By.CSS_SELECTOR, "button[data-testid='uc-accept-all-button']").click()