Selenium. I use find_elements and get_atribute, but how can I do it in one request so that I don’t get a not attached error?

Question

Python

I do it like this:

dialogs = [i.get_attribute('data-list-id') for i in
                   self.find_elements_by_xpath('//ul[@id="im_dialogs"]/li[contains(@class, "nim-dialog_unread ")]')]

Here the not attached error can come out, how can I make it so that not an element, but an attribute is immediately located in one request?

Answer 1

About not-attached - I suspect you didn't wait for the page to fully load.
In general, XPath has a choice of attribute values:

//ul[@id="im_dialogs"]/li[contains(@class, "nim-dialog_unread ")]/@data-list-id

Or perhaps so

string(//ul[@id="im_dialogs"]/li[contains(@class, "nim-dialog_unread ")]/@data-list-id)

Here string() is not a Python function, but an XPath function. If selenium supports it, then the query should return exactly the string value of the attribute.