_challenge.py 467 -> 236. The two flows and run_coding_challenge go to
_challenge_flows.py; the three static prompt strings to
_challenge_prompts.py, which covered the last eleven lines after the
first cut landed at 261.
The 13 patch strings in test_challenge_part3.py were repointed per test,
by which function is under test - the _run_user_impl tests keep
_challenge. Getting that wrong does not fail here, it HANGS: an
unintercepted _collect_and_rate_tests ran the real interactive flow and
spun the suite for two minutes. Runs are now under an explicit timeout,
and the patch targets are asserted to resolve before pytest starts.
Pass count is 216 before and after.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
New python_pkg/code_tutor package that turns an unfamiliar codebase into
an interactive lesson: analyse code into items (_analyzer), order them
dependency-first (_plan_builder), pose reimplement challenges
(_challenge + _challenge_support), verify user implementations with tests
and coverage (_verifier), track progress (_progress/_session), and offer
local-LLM hints (_llm), driven by a Typer/Rich CLI (cli).
- meta/pyproject.toml + .pre-commit-config.yaml + meta/requirements.txt:
add anthropic/rich/typer deps, a cli.py per-file-ignore (Typer B008 etc),
and code_tutor-specific ruff/pylint/mypy tuning.
- _challenge.py and its tests are split across _challenge_support.py and
test_challenge_part2/part3.py to stay under the 500-line file cap.
Verification: pytest 631 passed at 100% line+branch coverage; every file
<=500 lines; pre-commit (ruff ALL, mypy strict, pylint 10/10, bandit,
evidence + multi-file contract) green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017RRCdR4D8SaVrN2xraMQxM
