[Bug]: RuntimeError: Event loop is closed when using atexit to close async_playwright

[kuku119]

Version

1.49.1

Steps to reproduce

# browser_utils.py

import asyncio
import atexit
from typing import Optional

from playwright.async_api import async_playwright, Playwright, BrowserContext


_lock = asyncio.Lock()

_pwr: Optional[Playwright] = None
_context: Optional[BrowserContext] = None


async def start_playwright_persistent_context():
    global _pwr
    global _context

    print('starting...')

    async with _lock:
        if (_pwr is None) != (_context is None):
            raise RuntimeError

        if _context is None:
            _pwr = await async_playwright().start()
            _context = await _pwr.chromium.launch_persistent_context('Chromium/User Data', executable_path='Chromium/chrome-win/chrome.exe')

        return _context


start_browser = start_playwright_persistent_context


def _close_playwright():
    global _pwr
    global _context

    print('closing...')

    try:
        loop = asyncio.get_event_loop()
    except RuntimeError:
        loop = asyncio.new_event_loop()
        asyncio.set_event_loop(loop)

    if _context is not None:
        loop.run_until_complete(_context.close())

    if _pwr is not None:
        loop.run_until_complete(_pwr.stop())


atexit.register(_close_playwright)

if __name__ == '__main__':

    async def main():
        browser = await start_browser()
        page = await browser.new_page()
        await page.goto('http://localhost:8000')
        print(await page.content())

    asyncio.run(main())

Expected behavior

atexit can correctly close the Playwright instance.

Actual behavior

traceback.txt

Additional context

No response

Environment

- Operating System: [Windows 10]
- CPU: [arm64]
- Browser: [Chromium]
- Python Version: [3.13.1]
- Other info:

[mxschmitt]

How did you get the traceback?

When I'm running it I only get Exception ignored in atexit callback: <function _close_playwright at 0x100bab2e0>.