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f1a4107 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | #!/usr/bin/env python3
"""Remove duplicate non-empty lines from a corpus, keeping first occurrence."""
from __future__ import annotations
import argparse
from pathlib import Path
def main() -> None:
parser = argparse.ArgumentParser()
parser.add_argument("--input", type=Path, required=True)
parser.add_argument("--output", type=Path, required=True)
args = parser.parse_args()
lines = args.input.read_text(encoding="utf-8").splitlines()
seen: set[str] = set()
kept: list[str] = []
removed = 0
for line in lines:
key = line.strip()
if key and key in seen:
removed += 1
continue
if key:
seen.add(key)
kept.append(line)
args.output.parent.mkdir(parents=True, exist_ok=True)
args.output.write_text("\n".join(kept) + "\n", encoding="utf-8")
print(f"{args.input} -> {args.output}: removed={removed} kept={len(kept)}")
if __name__ == "__main__":
main()
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