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c289d87 | 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 | from __future__ import annotations
from pathlib import Path
from typing import Dict
def read_fasta(path: str | Path) -> Dict[str, str]:
"""Read FASTA entries into mapping of record id to sequence."""
source = Path(path)
records: Dict[str, str] = {}
current_id = None
current_seq: list[str] = []
for line in source.read_text(encoding="utf-8").splitlines():
line = line.strip()
if not line:
continue
if line.startswith(">"): # FASTA header
if current_id is not None:
records[current_id] = "".join(current_seq)
current_id = line[1:].split()[0]
current_seq = []
else:
current_seq.append(line)
if current_id is not None:
records[current_id] = "".join(current_seq)
return records
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