在python中使用另一个fasta的报头作为查询，查找一个fasta中重叠群的长度

from Bio import SeqIO
from Bio.SeqUtils import nt_search

query_file = "query.fasta"
target_file = "target.fasta"

query_record = next(SeqIO.parse(query_file, "fasta"))
query_header = query_record.description

target_records = SeqIO.parse(target_file, "fasta")
overlap_lengths = []

for target_record in target_records:
    target_header = target_record.description
    overlap_length = nt_search(str(query_record.seq), str(target_record.seq))
    overlap_lengths.append((target_header, overlap_length))

for target_header, overlap_length in overlap_lengths:
    print("Target Header:", target_header)
    print("Overlap Length:", overlap_length)
    print()