{
  "checker": {
    "claims": [
      {
        "claim": "Pyflakes checks Python source files for errors",
        "command": "<guest-path> -m pyflakes",
        "evidence": "undefined name 'undefined_name'\n",
        "expected": "reports undefined name",
        "input": "import os\nx = undefined_name\n (stdin)",
        "kind": "claim",
        "outcome": "Real input produced the expected result: undefined name 'undefined_name'",
        "returncode": 1,
        "source": "A simple program which checks Python source files for errors.",
        "source_checked": true,
        "source_file": "README.rst",
        "verdict": "yes"
      },
      {
        "claim": "Pyflakes detects various errors such as unused imports",
        "command": "<guest-path> -m pyflakes",
        "evidence": "'os' imported but unused\n<stdin>:2:5: undefined name 'undefined_name'\n",
        "expected": "reports unused import os",
        "input": "import os\nx = undefined_name\n (stdin)",
        "kind": "claim",
        "outcome": "Real input produced the expected result: 'os' imported but unused",
        "returncode": 1,
        "source": "Pyflakes analyzes programs and detects various errors.",
        "source_checked": true,
        "source_file": "README.rst",
        "verdict": "yes"
      }
    ],
    "cycle_checks": [
      {
        "claim": "Scheduled or looping main behavior",
        "command": "",
        "evidence": "Entry points inspected (bin/pyflakes, pyflakes/__main__.py, pyflakes/api.py, README.rst, tox.ini): pyflakes is a one-shot linter run per invocation; no cron, scheduler, loop, webhook, --once or --now option exists.",
        "expected": "identify the product trigger",
        "input": "source inspection",
        "kind": "cycle",
        "outcome": "Entry points inspected (bin/pyflakes, pyflakes/__main__.py, pyflakes/api.py, README.rst, tox.ini): pyflakes is a one-shot linter run per invocation; no cron, scheduler, loop, webhook, --once or --now option exists.",
        "source": "repository entry points",
        "verdict": "yes"
      }
    ],
    "details": {
      "argv": [
        "<guest-path>",
        "-m",
        "pyflakes"
      ],
      "kind": "cli",
      "needs_browser": false,
      "needs_credentials": false,
      "returncode": 1,
      "scope": "product operation",
      "stderr": "",
      "stdout": "<stdin>:1:1: 'os' imported but unused\n<stdin>:2:5: undefined name 'undefined_name'",
      "working": true
    },
    "evidence_strength": "readme_checked",
    "example_checks": [
      {
        "claim": "Check the checkout with the documented python -m pyflakes . invocation",
        "command": "<guest-path> -m pyflakes .",
        "deferred": false,
        "evidence": "",
        "expected": "no findings, exit 0",
        "input": "checkout directory (.)",
        "kind": "example",
        "outcome": "command completed successfully with no output",
        "returncode": 0,
        "source": "README.rst: You can also invoke Pyflakes with python#.# -m pyflakes .",
        "verdict": "yes"
      },
      {
        "claim": "Repository unit tests run via tox command",
        "command": "<guest-path> -m unittest discover pyflakes",
        "deferred": false,
        "evidence": ".ss..s..........s....................s.......................................................................................................................................................sssssssss.........................s.................................................................s.................................s.s..s.......................................................s.........s............................................................................ss..s..........s.\n----------------------------------------------------------------------\nRan 795 tests in 1.079s\n\nOK (skipped=28)",
        "expected": "all tests pass",
        "input": "unittest discover pyflakes",
        "kind": "example",
        "outcome": "command completed successfully",
        "returncode": 0,
        "source": "tox.ini",
        "verdict": "yes"
      }
    ],
    "status": "PASS"
  },
  "deviations": [
    "The README says pip install --upgrade pyflakes, which installed PyPI pyflakes 4.0.3 into the venv; the probes ran the checkout's own pyflakes source because the working directory comes first on sys.path (confirmed by printing pyflakes.__file__ from the workspace).",
    "The workspace has no .git directory, so the git init/fetch/reset pin step could not be applied and the pinned commit was not verified.",
    "The checker path /inputs/coldpass-preflight.py does not exist in this guest; used <guest-path> instead.",
    "First probe used a sample .py file outside the workspace, which the checker treats as agent-written code; replaced with the documented stdin invocation (pyflakes reads stdin when no path is given, pyflakes/api.py)."
  ],
  "fault_owner": null,
  "main_blocker": null,
  "operation": "Check Python source for errors with the pyflakes command-line tool (python -m pyflakes), reading source from stdin and from the checkout directory",
  "operation_scope": "Linux guest, Python 3.12.3 venv at <guest-path>, pyflakes run from the checked-out source snapshot (workspace is not a git repo; pinned commit f0a8b98156ba1645a45bc7d77dcfe79dbbf11f10 not verified because no git metadata was available; source was used as provided)",
  "outcome": "working",
  "plain_failure": null,
  "steps": [
    "python3 -m venv <guest-path>",
    "<guest-path> install --upgrade pyflakes (README Installation)",
    "cd <guest-path> && <guest-path> -m pyflakes . (README Useful tips; exit 0, no findings)",
    "printf 'import os\\nx = undefined_name\\n' | <guest-path> -m pyflakes (reports unused import os and undefined name; exit 1)",
    "<guest-path> -m unittest discover pyflakes (tox.ini test command; 795 tests, OK, skipped=28)"
  ],
  "stuck_step": null,
  "suggested_fix": "None for the product. Optional: provide the git metadata for the pinned commit so the source revision can be verified."
}