如何使用python合并文件夹中的多个.csv

import os
import pandas as pd

def merge_csv_files(folder_path, output_file):
    all_data = pd.DataFrame()
    for filename in os.listdir(folder_path):
        if filename.endswith(".csv"):
            file_path = os.path.join(folder_path, filename)
            data = pd.read_csv(file_path)
            all_data = all_data.append(data, ignore_index=True)
    all_data.to_csv(output_file, index=False)

folder_path = "文件夹路径"
output_file = "输出文件路径"
merge_csv_files(folder_path, output_file)