From 688ee325193d78fba401a4cac8d01febd4c2c237 Mon Sep 17 00:00:00 2001 From: yut23 Date: Thu, 9 Nov 2023 18:33:47 -0500 Subject: [PATCH] Fix ResourceWarning about unclosed file '/dev/null' --- nbval/kernel.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/nbval/kernel.py b/nbval/kernel.py index b567a7f..ae381cf 100644 --- a/nbval/kernel.py +++ b/nbval/kernel.py @@ -7,6 +7,7 @@ import os import logging +import subprocess from pprint import pformat try: @@ -85,7 +86,7 @@ def __init__(self, kernel_name, cwd=None, startup_timeout=60): self.km, self.kc = start_new_kernel( startup_timeout=startup_timeout, kernel_name=kernel_name, - stderr=open(os.devnull, 'w'), + stderr=subprocess.DEVNULL, cwd=cwd, )