Fix PYTHONBUFFERED typo to PYTHONUNBUFFERED=1

[Chasing1020]

ref: #1966 The intended env var to disable Python stdout/stderr buffering is PYTHONUNBUFFERED, not PYTHONBUFFERED. The misspelled variable had no effect, so Ray/training stdout was still subject to buffering.

[Copilot]

Pull request overview

Note

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Fixes a typo across the codebase where the environment variable PYTHONBUFFERED=16 (a non-existent/invalid variable) was being set instead of the correct PYTHONUNBUFFERED=1, which is the standard Python environment variable for disabling stdout/stderr buffering.

Changes:

• Replaces export PYTHONBUFFERED=16 with export PYTHONUNBUFFERED=1 across all shell scripts.
• Applies the same fix to two exec_command calls in slime/utils/external_utils/command_utils.py.
• Updates the NPU patch file and AMD tutorial documentation with the corrected variable name.

Reviewed changes

Copilot reviewed 48 out of 48 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/test_gspo.sh	Corrects env var name to PYTHONUNBUFFERED=1
slime_plugins/rollout_buffer/rollout_buffer_example.sh	Corrects env var name
slime/utils/external_utils/command_utils.py	Fixes two exec_command export strings
scripts/run-*.sh (many)	Corrects env var across run scripts
scripts/low_precision/run-*.sh	Corrects env var in low precision scripts
examples/**/*.sh	Corrects env var across example scripts
docs/en/platform_support/amd_tutorial.md	Corrects env var in tutorial doc
docker/npu_patch/slime.patch	Updates patch file with corrected env var

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