name: py-env-setup description: Host-specific Python execution guidance for OpenClaw on this machine. Prefer $PYTHON over python/python3 in PATH, because OpenClaw exec runs in a non-interactive shell and may not inherit interactive shell initialization. homepage: https://github.com/QAA-Tools/skills metadata: {"clawdbot":{"emoji":"🐍","requires":{"env":["PYTHON"]},"primaryEnv":"PYTHON"}}

Python Environment Setup

Use this skill whenever OpenClaw needs to run Python on this host.

Why this exists

On this machine, OpenClaw exec runs in a non-interactive shell. Interactive shell initialization may be skipped, so python, python3, or conda may be unavailable from PATH even though they work in a normal terminal.

Therefore, prefer the explicit Python entrypoint provided by environment variable PYTHON.

Rules

1. Prefer "$PYTHON" over python or python3.
2. Do not rely on source ~/.bashrc or conda activate for routine automation.
3. Before using Python, verify it exists and is executable.
4. Use "$PYTHON" -m pip ... for package installation.
5. Use "$PYTHON" script.py, "$PYTHON" -m module, or "$PYTHON" -c '...' for execution.
6. Apply this rule to all Python-related commands, not just pip.
7. If PYTHON is unset or invalid, report the problem clearly.

Validation

test -x "$PYTHON"
"$PYTHON" --version

Common patterns

Install packages

"$PYTHON" -m pip install -U package_name
"$PYTHON" -m pip install -U openai-whisper torch ffmpeg-python

Run a script

"$PYTHON" script.py

Run a module

"$PYTHON" -m module_name

Run inline Python

"$PYTHON" - <<'PY'
print('hello')
PY

Quick guard pattern

test -x "$PYTHON" || { echo "PYTHON not executable: $PYTHON" >&2; exit 1; }
"$PYTHON" --version

Fallback policy

Only if the task explicitly allows fallback, try in this order:

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1. $PYTHON
2. python3
3. python

Default policy: do not silently fallback. Prefer failing loudly if $PYTHON is missing, so environment issues are obvious.

Notes

• This skill is host-specific.
• It is meant to guide OpenClaw runtime behavior, not teach Python itself.
• The PYTHON value is read from the environment. This skill does not require a specific env-file location.

这个 Skill 质量较好，能有效解决 OpenClaw 在非交互式环境下运行 Python 的常见问题。文档结构清晰，规则明确易懂，示例丰富实用。优点是提供了完整的执行规则和常见使用模式，验证方法也很直观。不足之处在于它假设你已正确配置 PYTHON 环境变量，对新用户不够友好；另外缺少对常见错误的处理说明，某些边界情况的覆盖也不够全面。整体适合有经验的开发者快速查阅使用。