diff --git a/Lib/test/test_perf_profiler.py b/Lib/test/test_perf_profiler.py
index 7529c853f9c152..0207843cc0e8f7 100644
--- a/Lib/test/test_perf_profiler.py
+++ b/Lib/test/test_perf_profiler.py
@@ -318,6 +318,7 @@ def run_perf(cwd, *args, use_jit=False, **env_vars):
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=env,
+ text=True,
)
if proc.returncode:
print(proc.stderr, file=sys.stderr)
@@ -327,10 +328,10 @@ def run_perf(cwd, *args, use_jit=False, **env_vars):
jit_output_file = cwd + "/jit_output.dump"
command = ("perf", "inject", "-j", "-i", output_file, "-o", jit_output_file)
proc = subprocess.run(
- command, stderr=subprocess.PIPE, stdout=subprocess.PIPE, env=env
+ command, stderr=subprocess.PIPE, stdout=subprocess.PIPE, env=env, text=True
)
if proc.returncode:
- print(proc.stderr)
+ print(proc.stderr, file=sys.stderr)
raise ValueError(f"Perf failed with return code {proc.returncode}")
# Copy the jit_output_file to the output_file
os.rename(jit_output_file, output_file)
@@ -342,10 +343,9 @@ def run_perf(cwd, *args, use_jit=False, **env_vars):
stderr=subprocess.PIPE,
env=env,
check=True,
+ text=True,
)
- return proc.stdout.decode("utf-8", "replace"), proc.stderr.decode(
- "utf-8", "replace"
- )
+ return proc.stdout, proc.stderr
class TestPerfProfilerMixin:
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