如何将一个文件拆分为两个较小的文件？

def split_file(file_path, split_size):
    with open(file_path, 'r') as file:
        content = file.read()  # 读取文件内容

    # 按行拆分示例
    lines = content.splitlines()
    split_content1 = '\n'.join(lines[:len(lines)//2])  # 拆分为前一半内容
    split_content2 = '\n'.join(lines[len(lines)//2:])  # 拆分为后一半内容

    # 按固定大小拆分示例
    # split_content1 = content[:split_size]  # 拆分为前split_size个字符
    # split_content2 = content[split_size:]  # 拆分为剩余字符

    with open('split_file1.txt', 'w') as file1:
        file1.write(split_content1)  # 写入拆分后的内容到新文件1

    with open('split_file2.txt', 'w') as file2:
        file2.write(split_content2)  # 写入拆分后的内容到新文件2

    print('文件拆分完成')

split_file('original_file.txt', 2)  # 拆分为两个文件