ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter9/self-modifying-agent/demo.py

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+"""Run the complete offline self-modification release flow."""
+
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+
+from evolution import diagnose, generate_candidate, release_manifest, validate_candidate, write_candidate
+
+
+ROOT = Path(__file__).parent
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description="Experiment 9-6 self-modification pipeline")
+    parser.add_argument("--generator", choices=("deterministic", "llm"), default="deterministic")
+    parser.add_argument("--model", help="real LLM model; defaults to LLM_MODEL or gpt-5.6")
+    args = parser.parse_args()
+    trajectories = json.loads((ROOT / "failure_trajectories.json").read_text(encoding="utf-8"))
+    stable_path = ROOT / "stable" / "retry_policy.py"
+    stable_source = stable_path.read_text(encoding="utf-8")
+
+    diagnosis = diagnose(trajectories)
+    if args.generator == "llm":
+        from llm_generator import generate_with_openai
+        candidate = generate_with_openai(stable_source, diagnosis, args.model)
+    else:
+        candidate = generate_candidate(stable_source, diagnosis)
+    checks = validate_candidate(candidate["source"], trajectories, stable_source)
+    manifest = release_manifest(stable_source, candidate, diagnosis, checks)
+
+    write_candidate(candidate["source"], ROOT / "output" / "candidate" / "retry_policy.py")
+    (ROOT / "output" / "release_manifest.json").write_text(
+        json.dumps(manifest, ensure_ascii=False, indent=2), encoding="utf-8"
+    )
+
+    print(f"Experiment 9-6: trajectory-triggered self-modification (generator={args.generator})\n")
+    print("diagnosed target:", diagnosis["target"])
+    print("source cases:", ", ".join(diagnosis["source_case_ids"]))
+    print("\nCandidate diff:\n")
+    print(candidate["diff"])
+    print("checks:", checks)
+    print("decision:", manifest["decision"])
+    print("stable file unchanged:", stable_path.read_text(encoding="utf-8") == stable_source)
+    print("rollback version:", manifest["rollback_version"])
+
+
+if __name__ == "__main__":
+    main()