在python中通过函数为文件提供动态名称时面临的问题

import os
import random
import string
import datetime

def generate_unique_filename():
    timestamp = datetime.datetime.now().strftime("%Y%m%d%H%M%S")
    random_string = ''.join(random.choices(string.ascii_letters + string.digits, k=8))
    filename = f"{timestamp}_{random_string}.txt"
    return filename

def save_file_with_dynamic_name(data):
    filename = generate_unique_filename()
    with open(filename, 'w') as file:
        file.write(data)
    return filename

data = "Hello, World!"
saved_filename = save_file_with_dynamic_name(data)
print(f"File saved with dynamic name: {saved_filename}")