Update playwright/README.md

playwright/README.md

@@ -1,24 +1,34 @@
 ```python
 """
-WSL Debian
+Linux (WSL Debian)
 
-pip install playwright nest_asyncio
+pip install playwright
 playwright install --with-deps
 """
 # %%
-import asyncio; __import__('nest_asyncio').apply()
-@(sync := lambda coro: __import__('functools').wraps(coro)(
+import asyncio, functools
+def _run_once(loop):
+    loop._process_events(loop._selector.select(0))
+    if (ready := loop._ready) and (handle := ready.popleft())._cancelled is False:
+        task = (tasks := asyncio.tasks._current_tasks).pop(loop, None)
+        handle._run(); tasks[loop] = task
+(loop := asyncio.get_event_loop()).__class__._run_once = _run_once
+asyncio.run = loop.run_until_complete; loop.__class__._check_running = lambda _: 0
+
+@(sync := lambda coro: functools.wraps(coro)(
     lambda *args, **kwargs: asyncio.run(coro(*args, **kwargs))))
-async def Page():
+async def Page(headless=True):
     from playwright.async_api import async_playwright
-    browser = await (await async_playwright().start()).firefox.launch()
+    browser = await (await async_playwright().start()).firefox.launch(headless=headless)
     (page := await browser.new_page()).set_default_timeout(0)
     for attr in dir(page):
         if asyncio.iscoroutinefunction(method := getattr(page, attr)):
             setattr(page, attr, sync(method))
-    from IPython.display import Image
-    page.goto = lambda url, goto=page.goto: goto(url) and Image(page.screenshot())
-    return page
-(page := Page()).goto('https://naver.com')
-print(page.title()) # NAVER
+    try:
+        from IPython.display import Image
+        page.goto = lambda url, goto=page.goto: goto(url) and Image(page.screenshot())
+    finally:
+        return page
+(page := Page()).goto('https://example.org')
+print(page.title()) # Example Domain
 ```