{
 "run_id": 2,
 "model": "glm4-9b",
 "mode": "oneshot",
 "challenge": "calculator",
 "sample": 0,
 "status": "degenerate",
 "error": "one-shot reply is not valid JSON: Invalid \\escape: line 1 column 125 (char 124)",
 "score_total": null,
 "score_tests": null,
 "score_deliverables": null,
 "score_content": null,
 "tests_passed": null,
 "tests_failed": null,
 "wall_secs": 30.449076000004425,
 "slug": "run2-glm4-9b-oneshot-calculator-s0",
 "challenge_title": "Expression evaluator (no eval)",
 "spec": "Create calc.py with exactly one public function:\n\nevaluate(expr: str) -> float\n    Evaluate an arithmetic expression containing numbers (integers or decimals), the binary operators + - * /, unary minus, parentheses, and arbitrary whitespace. Normal precedence: * and / bind tighter than + and -; operators of equal precedence associate left to right. Division is true division. Examples: evaluate(\"2+3*4\") == 14, evaluate(\"(2+3)*4\") == 20, evaluate(\"2*-3\") == -6.\n\nYou must parse the expression yourself: using eval() or exec() is forbidden and is checked by the test suite. Use only the Python standard library.",
 "expected_files": [
  "calc.py"
 ],
 "content_checks": {
  "calc.py": [
   "def evaluate"
  ]
 },
 "test_files": {
  "test_calc.py": "from pathlib import Path\n\nfrom calc import evaluate\n\n\ndef test_precedence():\n    assert evaluate(\"2+3*4\") == 14\n\n\ndef test_parentheses():\n    assert evaluate(\"(2+3)*4\") == 20\n    assert evaluate(\"2*(3+(4-1))\") == 12\n\n\ndef test_true_division():\n    assert evaluate(\"10/4\") == 2.5\n\n\ndef test_left_associativity():\n    assert evaluate(\"10-3-2\") == 5\n    assert evaluate(\"16/4/2\") == 2\n\n\ndef test_unary_minus():\n    assert evaluate(\"-3+5\") == 2\n    assert evaluate(\"2*-3\") == -6\n\n\ndef test_whitespace_and_decimals():\n    assert evaluate(\"  1.5 + 2.25 \") == 3.75\n\n\ndef test_does_not_use_eval():\n    src = Path(\"calc.py\").read_text()\n    assert \"eval(\" not in src\n    assert \"exec(\" not in src\n"
 },
 "events": [
  {
   "ts": "2026-07-17T16:16:54.150888+00:00",
   "event": "start",
   "run": 2,
   "model": "glm4-9b",
   "mode": "oneshot",
   "challenge": "calculator",
   "sample": 0
  },
  {
   "ts": "2026-07-17T16:16:54.150978+00:00",
   "event": "prompt",
   "mode": "oneshot",
   "content": "You are completing a coding task in one shot. Write complete files that satisfy the spec below. Tests (pytest) will be run against your files; you cannot run them yourself.\n\nReply with ONE JSON object and nothing else:\n{\"files\": {\"<relative path>\": \"<complete file content>\", ...}}\n\nRequired deliverable files: calc.py\n\nSPEC:\nCreate calc.py with exactly one public function:\n\nevaluate(expr: str) -> float\n    Evaluate an arithmetic expression containing numbers (integers or decimals), the binary operators + - * /, unary minus, parentheses, and arbitrary whitespace. Normal precedence: * and / bind tighter than + and -; operators of equal precedence associate left to right. Division is true division. Examples: evaluate(\"2+3*4\") == 14, evaluate(\"(2+3)*4\") == 20, evaluate(\"2*-3\") == -6.\n\nYou must parse the expression yourself: using eval() or exec() is forbidden and is checked by the test suite. Use only the Python standard library.\n"
  },
  {
   "ts": "2026-07-17T16:17:24.599322+00:00",
   "event": "completion",
   "content": "```json\n{\"files\": {\"calc.py\": \"import re\\n\\nclass ExpressionEvaluator:\\n    def __init__(self, expr):\\n        self.expr = re.sub(r'\\s+', '', expr)\\n\\n    def evaluate(self):\\n        return self._evaluate_helper(0, len(self.expr))\\n\\n    def _evaluate_helper(self, start, end):\\n        if start == end:\\n            return float(self.expr[start])\\n        for i in range(start + 1, end):\\n            if self.expr[i] in '+-*/':\\n                left = self._evaluate_helper(start, i)\\n                right = self._evaluate_helper(i + 1, end)\\n                if self.expr[i] == '+':\\n                    return left + right\\n                elif self.expr[i] == '-':\\n                    return left - right\\n                elif self.expr[i] == '*':\\n                    return left * right\\n                elif self.expr[i] == '/':\\n                    return left / right\\n        raise ValueError('Invalid expression')\\n\\n\\ndef evaluate(expr: str) -> float:\\n    evaluator = ExpressionEvaluator(expr)\\n    return evaluator.evaluate()\"}}",
   "tokens": 252
  },
  {
   "ts": "2026-07-17T16:17:24.600218+00:00",
   "event": "degenerate",
   "error": "one-shot reply is not valid JSON: Invalid \\escape: line 1 column 125 (char 124)"
  }
 ],
 "files": {},
 "file_metrics": [],
 "code": {
  "files": 0,
  "loc": 0,
  "sloc": 0,
  "chars": 0,
  "functions": 0,
  "classes": 0,
  "complexity": 0,
  "max_complexity": 0,
  "max_depth": 0,
  "imports": [],
  "avg_function_len": 0.0,
  "parse_errors": 0
 },
 "session": {
  "model_calls": 1,
  "actions": {},
  "bad_actions": 0,
  "test_runs": 0,
  "tokens_out": 252,
  "tokens_in": 0,
  "turns": 0
 },
 "test_output": null
}