Palindrome check

qwen3-30b-a3b

Pythononeshotrun 2sample 0291.0s wall

← run 2 · raw JSON · challenge definitions

100

score

tests (60%)5/5 passed

deliverables (20%)100%

content checks (20%)100%

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

view full prompt

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.

reply2832 tokens

view raw reply

{"files": {"palindrome.py": "def is_palindrome(text: str) -> bool:\n    cleaned = ''.join(filter(str.isalnum, text.lower()))\n    return cleaned == cleaned[::-1]"}}

write_filepalindrome.py · 130 B

graded 100.05 passed, 0 failed

pytest output

.....                                                                    [100%]
5 passed in 0.00s

03 what it wrote

files

lines

source lines

functions

classes

cyclomatic

max nesting

3.0

avg fn lines

stdlib imports: none

File	LOC	SLOC	Fns	Complexity	Depth	Imports
palindrome.py	3	3	1	1	1	—

palindrome.py · 3 lines · 130 B

def is_palindrome(text: str) -> bool:    cleaned = ''.join(filter(str.isalnum, text.lower()))    return cleaned == cleaned[::-1]

04 how it was graded

✓ ok 5/5 passed

model calls

invalid actions

self test runs

2.8k

tokens out

—

tokens in

291.0s

wall time

agent actions: —

final pytest output

.....                                                                    [100%]
5 passed in 0.00s