How to use test_should_not_throw_when_continuing_while_page_is_closing method in Playwright Python

I just found the answer:

I need to set also the following and it works: browser.new_context(no_viewport=True)

https://github.com/microsoft/playwright-python/issues/1622 :

Sounds like we need to upgrade to Greenlet v2 for that.

You need to install browsers by doing playwright install or python -m playwright install see here: https://playwright.dev/python/docs/intro#installation

You can ask for the class name of the element.

page.locator("div").evaluate("node => node.className")

I guess you are using codegen probably.

That page is a little bit strange for urls as I can see.

Anyways, I fixed your code:

from playwright.sync_api import Playwright, sync_playwright, expect


def run(playwright: Playwright) -> None:
    browser = playwright.chromium.launch(headless=False)
    context = browser.new_context()

    # Open new page
    page = context.new_page()

    # Go to https://www.elections.il.gov/CampaignDisclosure/ContributionSearchByCommittees.aspx?T=637994490317517425
    page.goto(
        "https://www.elections.il.gov/CampaignDisclosure/ContributionSearchByCommittees.aspx")

    # Fill input[name="ctl00\$ContentPlaceHolder1\$txtCmteID"]
    page.locator("input[name=\"ctl00\\$ContentPlaceHolder1\\$txtCmteID\"]").fill("34589")

    page.locator("input:has-text(\"Search\")").click()

    page.locator("text=Download This List").click()

    # Click text=CSV File
    with page.expect_download() as download_info:
        page.locator("text=CSV File").click()
    download = download_info.value
    download.save_as(download.suggested_filename)


    # ---------------------
    context.close()
    browser.close()


with sync_playwright() as playwright:
    run(playwright)

Instead of page.wait_for_timeout(5000), you can write an expect assertion, which has a default timeout of 5 seconds.

locator = page.locator("//input[@type="checkbox"]")
expect(locator).to_be_checked()

Or, if you want to increase the timeout you can do this:

locator = page.locator("//input[@type="checkbox"]")
expect(locator).to_be_checked(timeout=7000)

You can define your own function like this one:

def my_own_wait_for_selector(page, selector, time_out):
    try:
        page.wait_for_selector(selector, timeout=time_out)
        return True
    except:
        return False

That function will wait for a selector and if given some time (miliseconds) the element is not there it will return False instead of trowing an error.

Then in your code you could try something like:

while not my_own_wait_for_selector(page, "my_button_selector", 5000):
    page.reload()
page.locator("my_button_selector").click()

As you can see we are checking if our button is present, and we will wait only 5 seconds, if after 5 seconds the button is not there, we will reload, and again and again until our button is there, once our button is there code will continue and then we will click the button.

Be careful, because if your button is never there, your script will reload and your script will never finish, so you should add some other condition to your while

I had a similar problem: I had PM2 run by an Apache Airflow Celery worker running a playwright task, hourly. The job hung.

I suspect it is the environment variables littered by Byobu and PM2. What worked for me was wrapping the Python script in a bash script and sanitizing the environment variable like the following:

#!/bin/bash
[ "$HOME" != "" ] && exec -c $0
# Your python script should come below:
/home/ubuntu/usr/venv-3.10-airflow/bin/airflow celery worker

The first line clears the env vars (as suggested in Sanitize environment with command or bash script?). Now you can run this script with pm2 start command. My worker ran fine for about 24 hours as of now. I hope this works for you too.

There is no outer_html out of the box. But it's not hard to implement it:

locator.evaluate("el => el.outerHTML")