How to use test_evaluate_throw_for_detached_frames method in Playwright Python

Best Python code snippet using playwright-python

test_frames.py

Source:test_frames.py Github

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...45 await frame1.frame_element()46 except Error as e:47 error = e48 assert error.message == "Frame has been detached."49async def test_evaluate_throw_for_detached_frames(page, server, utils):50 frame1 = await utils.attach_frame(page, "frame1", server.EMPTY_PAGE)51 await utils.detach_frame(page, "frame1")52 error = None53 try:54 await frame1.evaluate("7 * 8")55 except Error as e:56 error = e57 assert "Execution Context is not available in detached frame" in error.message58async def test_evaluate_isolated_between_frames(page, server, utils):59 await page.goto(server.EMPTY_PAGE)60 await utils.attach_frame(page, "frame1", server.EMPTY_PAGE)61 assert len(page.frames) == 262 [frame1, frame2] = page.frames63 assert frame1 != frame2...

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Original answer:

Using querySelector() / querySelectorAll with XPath (XML Path Language) lets you retrieve the elementHandle (respectively a collection of handles). Generally speaking, XPath can be used to navigate through elements and attributes in an XML document.

from playwright import sync_playwright

with sync_playwright() as p:
    for browser_type in [p.chromium, p.firefox, p.webkit]:
        browser = browser_type.launch(headless=False)
        page = browser.newPage()
        page.goto('https://duckduckgo.com/')
        element = page.querySelector('input[id=\"search_form_input_homepage\"]')
        
        parent = element.querySelector('xpath=..')
        grandparent = element.querySelector('xpath=../..')
        siblings = element.querySelectorAll('xpath=following-sibling::*')
        children = element.querySelectorAll('xpath=child::*')

        browser.close()

Update (2022-07-22):

It seems that browser.newPage() is deprecated, so in newer versions of playwright, the function is called browser.new_page() (note the different function name).

Optionally create a browser context first (and close it afterwards) and call new_page() on that context.

The way the children/parent/grandparent/siblings are accessed stays the same.

from playwright import sync_playwright

with sync_playwright() as p:
    for browser_type in [p.chromium, p.firefox, p.webkit]:
        browser = browser_type.launch(headless=False)
        context = browser.new_context()
        page = context.new_page()
        page.goto('https://duckduckgo.com/')
        element = page.querySelector('input[id=\"search_form_input_homepage\"]')
        
        parent = element.querySelector('xpath=..')
        grandparent = element.querySelector('xpath=../..')
        siblings = element.querySelectorAll('xpath=following-sibling::*')
        children = element.querySelectorAll('xpath=child::*')

        context.close()
        browser.close()
https://stackoverflow.com/questions/65400809/in-playwright-for-python-how-do-i-get-elements-relative-to-elementhandle-child

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