Palindrome check

qwen2.5-coder-3b

Pythononeshotrun 2sample 03.4s wall

← run 2 · raw JSON · challenge definitions

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score

tests (60%)—

deliverables (20%)—

content checks (20%)—

one-shot reply is not valid JSON: Expecting ',' delimiter: line 3 column 24 (char 38)

01 what the model was asked

Create palindrome.py with exactly one function:

is_palindrome(text: str) -> bool
    Return True if text reads the same forwards and backwards, ignoring letter case and ignoring every character that is not a letter or digit. Text with no letters or digits at all (including the empty string) counts as a palindrome.

Use only the Python standard library.

required deliverables + checks

✗deliverable: palindrome.py

✗palindrome.py must contain “def is_palindrome”

pytest suite it was graded against

test_palindrome.py · 22 lines · 480 B

from palindrome import is_palindrome  def test_simple_palindrome():    assert is_palindrome("racecar") is True  def test_simple_non_palindrome():    assert is_palindrome("hello") is False  def test_ignores_case_and_punctuation():    assert is_palindrome("A man, a plan, a canal: Panama!") is True  def test_empty_is_palindrome():    assert is_palindrome("") is True  def test_digits():    assert is_palindrome("12321") is True    assert is_palindrome("12345") is False

02 what it did — full transcript

promptthe exact instruction sent to the model

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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.

Reply with ONE JSON object and nothing else:
{"files": {"<relative path>": "<complete file content>", ...}}

Required deliverable files: palindrome.py

SPEC:
Create palindrome.py with exactly one function:

is_palindrome(text: str) -> bool
    Return True if text reads the same forwards and backwards, ignoring letter case and ignoring every character that is not a letter or digit. Text with no letters or digits at all (including the empty string) counts as a palindrome.

Use only the Python standard library.

reply89 tokens

view raw reply

```json
{
  "files": {
    "palindrome.py": """
def is_palindrome(text: str) -> bool:
    # Remove non-alphanumeric characters and convert to lowercase
    cleaned_text = ''.join(char.lower() for char in text if char.isalnum())
    
    # Check if the cleaned text reads the same forwards and backwards
    return cleaned_text == cleaned_text[::-1]
    """
  }
}
```

⚠ degenerate outputone-shot reply is not valid JSON: Expecting ',' delimiter: line 3 column 24 (char 38)

03 what it wrote

The model produced no files.

04 how it was graded

⚠ degenerate —

model calls

invalid actions

self test runs

tokens out

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tokens in

3.4s

wall time

agent actions: —