[Question]: Creating a playwright instance per thread with the async api

[LeilaSchooley]

Your question

I saw this #623 (comment)
how would I adapt this example for the async api? It's required for a project.

import threading
from playwright.async_api import async_playwright
from concurrent.futures import ThreadPoolExecutor, ProcessPoolExecutor


class Tls(threading.local):

    def __init__(self) -> None:
        self.playwright = async_playwright().start()
        print("Create playwright instance in Thread", threading.current_thread().name)


class Worker:
    tls = Tls()

    async def run(self):
        print("Launched worker in ", threading.current_thread().name)
        browser = self.tls.playwright.chromium.launch(headless=False)
        context = browser.new_context()
        page = browser.new_page()
        page.goto("http://whatsmyuseragent.org/")
        page.screenshot(path=f"example-{threading.current_thread().name}.png")
        page.close()
        context.close()
        browser.close()
        print("Stopped worker in ", threading.current_thread().name)


if __name__ == "__main__":
    with ThreadPoolExecutor(max_workers=5) as executor:
        for _ in range(50):
            worker = Worker()
            executor.submit(worker.run)

Create playwright instance in Thread MainThread
:33: RuntimeWarning: coroutine 'Worker.run' was never awaited
executor.submit(worker.run)
RuntimeWarning: Enable tracemalloc to get the object allocation traceback
85: RuntimeWarning: coroutine 'Worker.run' was never awaited
del work_item
RuntimeWarning: Enable tracemalloc to get the object allocation traceback
sys:1: RuntimeWarning: coroutine 'PlaywrightContextManager.start' was never awaited

[mxschmitt]

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