From 78d2b2a67ca292200de2938d5a9d1fce1716356e Mon Sep 17 00:00:00 2001 From: Max Schmitt Date: Fri, 7 Aug 2020 02:10:04 +0200 Subject: [PATCH] fix: stderr redirect with monkeypatched stderr --- playwright/main.py | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/playwright/main.py b/playwright/main.py index 4726ef4bf..049535ec6 100644 --- a/playwright/main.py +++ b/playwright/main.py @@ -13,6 +13,7 @@ # limitations under the License. import asyncio +import io import subprocess import sys from typing import Any @@ -45,11 +46,21 @@ async def run_driver_async() -> Connection: driver_name = compute_driver_name() driver_executable = package_path / "drivers" / driver_name + # Sourced from: https://github.com/pytest-dev/pytest/blob/49827adcb9256c9c9c06a25729421dcc3c385edc/src/_pytest/faulthandler.py#L73-L80 + def _get_stderr_fileno() -> int: + try: + return sys.stderr.fileno() + except io.UnsupportedOperation: + # pytest-xdist monkeypatches sys.stderr with an object that is not an actual file. + # https://docs.python.org/3/library/faulthandler.html#issue-with-file-descriptors + # This is potentially dangerous, but the best we can do. + return sys.__stderr__.fileno() + proc = await asyncio.create_subprocess_exec( str(driver_executable), stdin=asyncio.subprocess.PIPE, stdout=asyncio.subprocess.PIPE, - stderr=sys.stderr, + stderr=_get_stderr_fileno(), limit=32768, ) assert proc.stdout pFad - Phonifier reborn

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