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gh-142353: Isolate tests from personal GNU Readline init files #142370

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gh-142353: Isolate tests from personal GNU Readline init files #142370

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4de3631
Isolate tests from personal Readline init files using `INPUTRC=/dev/n…
johnslavik Dec 7, 2025
1c6153a
Remove readline logic (it is unnecessary)
johnslavik Dec 11, 2025
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8 changes: 8 additions & 0 deletions Lib/test/support/pty_helper.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,14 @@ def run_pty(script, input=b"dummy input\r", env=None):
output = bytearray()
[master, slave] = pty.openpty()
args = (sys.executable, '-c', script)

# Isolate readline from personal init files by setting INPUTRC
# to an empty file. See also GH-142353.
if env is None:
env = {**os.environ.copy(), "INPUTRC": os.devnull}
else:
env.setdefault("INPUTRC", os.devnull)

proc = subprocess.Popen(args, stdin=slave, stdout=slave, stderr=slave, env=env)
os.close(slave)
with ExitStack() as cleanup:
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