How to use to_have_value method in Playwright Python

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

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

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

What dialog.accept() does is to accept (click OK) the dialog. page.click("OK") only works with DOM (HTML) elements, not with browser dialogs.

After trying many different variants, I guessed a working syntax

handle.selectOption({"label": "Banana"})

It would appear that when you run the script on your server, the user you're using does not have permission to create either the local_save directory or the path to that directory. On a Unix-like system, /var and most of its subdirectories are generally writable only by root. The exception is /var/tmp. If you change your local_save variable to be

local_save = '/var/tmp/apis/tceprotocolo'

and prior to calling your function, call

os.makedirs(local_save)

then your function should successfully write output to that directory.

As mentioned in the comments, your tests should be independent and indeed this can be achieved with database fixtures. One way to achieve this and worked really well for me is by using testcontainers: https://github.com/testcontainers/testcontainers-python.

A fixture might look like this in pytest with, in my case, a Postgress database:

@pytest.fixture(scope="module", name="session_for_db_in_testcontainer")
def db_engine():
    """
    Creates testcontainer with Postgres db
    """
    pg_container = PostgresContainer('postgres:latest')
    pg_container.start()

    # Fireup the SQLModel engine with the uri of the container
    db_engine = create_engine(pg_container.get_connection_url())
    sqlmodel_metadata.create_all(db_engine)

    with Session(db_engine) as session_for_db_in_testcontainer:
        # add some rows to start, for test get requests and posting existing data
        add_data_to_test_db(database_input_path, session_for_db_in_testcontainer)
        yield session_for_db_in_testcontainer

    # Will be executed after the last test
    session_for_db_in_testcontainer.close()
    pg_container.stop()

Like this during the test run a (Postgres) DB is created it only runs during a session, module or function depending on the scope of the fixture. If you want, you can add test data to the db as well like in the example.

Your locator should look like this. Replace ":" with ">>"

div[class="some-class"]>>nth=3

Another way is to simply use the getAttribute() method of the elementHandle to retrieve the value:

handle = page.querySelector('//input[starts-with(@name, "Counter")]')
value = handle.getAttribute("value")

After investigating and trying several things, looks like the problem is the user_agent of the browser when is in headless mode, for some reason the default user agent does not like to that page, try with:

def extract_html(self):
    with sync_playwright() as p:
        browser = p.chromium.launch(headless=True)
        page = browser.new_page(user_agent='Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36')
        page.goto('http://book.flygofirst.com/Flight/Select?inl=0&CHD=0&s=True&o1=BOM&d1=BLR&ADT=1&dd1=2022-12-10&gl=0&glo=0&cc=INR&mon=true')
        html = page.inner_html('#sectionBody')
        return html