如何批量拆分csv文件数据？

import csv

def split_csv(input_file, output_prefix, chunk_size):
    with open(input_file, 'r') as file:
        reader = csv.reader(file)
        header = next(reader)  # 读取CSV文件的头部

        count = 1
        current_chunk = []
        for row in reader:
            current_chunk.append(row)

            if len(current_chunk) == chunk_size:
                output_file = f"{output_prefix}_{count}.csv"
                with open(output_file, 'w', newline='') as output:
                    writer = csv.writer(output)
                    writer.writerow(header)
                    writer.writerows(current_chunk)
                count += 1
                current_chunk = []

        # 处理剩余的数据
        if current_chunk:
            output_file = f"{output_prefix}_{count}.csv"
            with open(output_file, 'w', newline='') as output:
                writer = csv.writer(output)
                writer.writerow(header)
                writer.writerows(current_chunk)

# 示例用法
split_csv('input.csv', 'output', 1000)