Python多线程抓取，将数据写入csv文件

import requests
import csv
import threading

def fetch_data(url):
    response = requests.get(url)
    data = response.json()
    return data

def write_to_csv(data, filename):
    with open(filename, 'a', newline='') as csvfile:
        writer = csv.writer(csvfile)
        writer.writerow(data)

def main():
    urls = ['http://example.com/api/1', 'http://example.com/api/2', 'http://example.com/api/3']
    threads = []
    filename = 'data.csv'

    for url in urls:
        t = threading.Thread(target=fetch_and_write, args=(url, filename))
        t.start()
        threads.append(t)

    for t in threads:
        t.join()

if __name__ == '__main__':
    main()