H1K0
a473499fac
src/tokenizer.py:
- parse_chord_file(Path) → ChordPeriod: reads header + bar body, strips //
comments, validates bar position counts and chord symbols, raises
ChordFormatError with filename and bar number on any violation.
- transpose_to_canonical(ChordPeriod) → ChordPeriod: shifts all chord roots
and bass notes by the semitone offset to C major / A minor; fast-path
returns the original object when shift == 0.
tests/test_chord_file_parser.py: 39 tests covering parsing of 4 valid fixtures
(C major, F# major, B minor, G# minor), error messages for 2 invalid
fixtures, and transposition correctness including slash chord root+bass.
tests/fixtures/: 6 .chord fixture files (4 valid, 2 invalid).
requirements.txt: pinned to current latest stable versions
(torch 2.12.0, music21 10.1.0, pretty_midi 0.2.11, matplotlib 3.10.9,
numpy 2.4.6, pandas 3.0.3, pytest 9.0.3); Python >= 3.11 noted.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
10 lines
210 B
Plaintext
10 lines
210 B
Plaintext
# title: C major test
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# key: C_major
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# time: 4/4
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# subdivision: 4
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# style: user
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# function: chorus
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| C . . . | Am7 . . . | F/A . . . | G7 . . . | // first half
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| Em7 . . . | Am7 . . . | Dm7 . . . | G7 . . . |
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