Use stack(0) in more places, to avoid requesting expensive stack context information

Author: neoncube2

playwright/_impl/_network.py

@@ -530,7 +530,7 @@ async def _race_with_page_close(self, future: Coroutine) -> None:
         setattr(
             fut,
             "__pw_stack__",
-            getattr(asyncio.current_task(self._loop), "__pw_stack__", inspect.stack()),
+            getattr(asyncio.current_task(self._loop), "__pw_stack__", inspect.stack(0)),
         )
         target_closed_future = self.request._target_closed_future()
         await asyncio.wait(

playwright/_impl/_path_utils.py

@@ -14,12 +14,14 @@
 
 import inspect
 from pathlib import Path
+from types import FrameType
+from typing import cast
 
 
 def get_file_dirname() -> Path:
     """Returns the callee (`__file__`) directory name"""
-    frame = inspect.stack()[1]
-    module = inspect.getmodule(frame[0])
+    frame = cast(FrameType, inspect.currentframe()).f_back
+    module = inspect.getmodule(frame)
     assert module
     assert module.__file__
     return Path(module.__file__).parent.absolute()

playwright/_impl/_sync_base.py

@@ -105,7 +105,7 @@ def _sync(
 
         g_self = greenlet.getcurrent()
         task: asyncio.tasks.Task[Any] = self._loop.create_task(coro)
-        setattr(task, "__pw_stack__", inspect.stack())
+        setattr(task, "__pw_stack__", inspect.stack(0))
         setattr(task, "__pw_stack_trace__", traceback.extract_stack())
 
         task.add_done_callback(lambda _: g_self.switch())