如何在python中将巨大的文件更改为csv

pip install pandas

import pandas as pd

# 读取文件
data = pd.read_csv('large_file.txt', chunksize=10000)

# 将数据块保存为CSV文件
for i, chunk in enumerate(data):
    chunk.to_csv(f'large_file_chunk_{i}.csv', index=False)

import csv

# 打开文件
with open('large_file.txt', 'r') as file:
    reader = csv.reader(file)

    # 创建多个CSV文件
    for i in range(num_files):
        with open(f'large_file_chunk_{i}.csv', 'w', newline='') as output_file:
            writer = csv.writer(output_file)

            # 将数据写入CSV文件
            for row in reader:
                writer.writerow(row)