如何获取目录中具有特定扩展名的所有文件？

import os

def get_files_with_extension(directory, extension):
    file_list = []
    for root, dirs, files in os.walk(directory):
        for file in files:
            file_name, file_extension = os.path.splitext(file)
            if file_extension == extension:
                file_list.append(os.path.join(root, file))
    return file_list

# 示例用法
directory_path = '/path/to/directory'  # 替换为目标目录的实际路径
target_extension = '.txt'  # 替换为目标扩展名
result = get_files_with_extension(directory_path, target_extension)
print(result)