如何向一些(不是全部) fasta标头添加子字符串

from Bio import SeqIO

def read_fasta_file(file_path):
    sequences = []
    headers = []
    with open(file_path, "r") as fasta_file:
        for record in SeqIO.parse(fasta_file, "fasta"):
            sequences.append(str(record.seq))
            headers.append(record.description)
    return sequences, headers

def add_substring_to_headers(headers, substring):
    modified_headers = []
    for header in headers:
        if "your_condition_to_select_specific_headers" in header:
            modified_headers.append(header + substring)
        else:
            modified_headers.append(header)
    return modified_headers

def write_fasta_file(file_path, sequences, headers):
    with open(file_path, "w") as fasta_file:
        for i in range(len(sequences)):
            fasta_file.write(">" + headers[i] + "\n")
            fasta_file.write(sequences[i] + "\n")