[Python] playwright python how to detect browser window is closed

I'm writing a simple Python script using requests.get to scrape data from a website that requires login. The script first checks whether the user is already logged in. If not, it launches a Chromium browser via Playwright and lets the user log in manually. After that, cookies are extracted from the Playwright context and passed to requests.get to continue the scraping.

The behavior I want is: once the Playwright browser window is opened, the script should pause and wait until the user closes the window by clicking the "X" button in the top-right corner of the window. Once the window is closed, the script should resume execution.

The problem is, I can't figure out how to properly detect when the user closes the browser window. I tried using page.is_closed() and browser.is_connected(), but neither of them worked as expected — they don't seem to detect when the window is closed manually. It looks like those checks only reflect the internal process, not the window state.

Here’s a simplified version of my code:

import time
from playwright.sync_api import sync_playwright

with sync_playwright() as p:
browser = p.chromium.launch(headless=False)
context = browser.new_context()
page = context.new_page()

page.goto("https://example.com/login")
print("Please log in, then close the window")

# Try to detect when the window is closed
while True:
if page.is_closed():
print("Window is closed")
break
time.sleep(1)

# Extract cookies
cookies = context.cookies()
print("Cookies:", cookies)

browser.close()


The while loop never exits, even if the user manually closes the browser window.

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