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Krzysztof kuhy Rudnicki
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Docker mysql:8.0.33 container, judge-style output grading, 12 original drills with live-verified references kept in tests only. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WzxdWZewj4WS5X6AZyjWDp
42 lines
1.3 KiB
Python
42 lines
1.3 KiB
Python
"""Output normalisation and diffing, mirroring an exact-match judge.
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The engine prints ``mysql -B -N`` output (no header, tab-separated, ``NULL``
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literal). Before comparing we turn each tab into one space and strip trailing
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whitespace per line -- nothing else. Case, decimals and row order stay strict.
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"""
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from __future__ import annotations
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from itertools import zip_longest
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_ABSENT = "<no line>"
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def normalize(text: str) -> list[str]:
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"""Return judge-style lines: tabs to single spaces, right-stripped."""
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return [line.replace("\t", " ").rstrip() for line in text.splitlines()]
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def matches(expected: str, actual: str) -> bool:
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"""True when both outputs normalise to identical line lists."""
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return normalize(expected) == normalize(actual)
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def _show(line: str | None) -> str:
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"""Render a line for the diff, making odd spacing visible via repr."""
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if line is None:
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return _ABSENT
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if line.startswith(" ") or " " in line:
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return repr(line)
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return line
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def diff(expected: list[str], actual: list[str]) -> str:
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"""Line-by-line expected/actual report for differing lines only."""
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blocks = [
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f"line {no}:\n expected: {_show(exp)}\n actual : {_show(act)}"
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for no, (exp, act) in enumerate(zip_longest(expected, actual), start=1)
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if exp != act
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]
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return "\n".join(blocks)
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