python写入csv代码

import csv
import osdef save_to_csv(book_list):with open('books.csv','w',newline='', encoding='utf-8-sig') as csvfile:writer=csv.DictWriter(csvfile,fieldnames=['书名', '作者', 'ISBN', '价格','库存'])writer.writeheader()for book in book_list:print(book)writer.writerow(book)
def main():print("初始 books.csv 文件创建成功。")if os.path.exists('books.csv'):os.remove('books.csv')  # 清理旧文件with open('books.csv', 'w', newline='', encoding='utf-8-sig') as f:csv.writer(f)new_book_data = [{'书名': "Python编程从入门到实践",'作者': "Eric Matthes",'ISBN': "9787115428028",'价格':89.00,'库存': 5,},{'书名': "数据结构与算法",'作者': "王小明",'ISBN': "9787302456466",'价格': 65.00,'库存': 3,}]save_to_csv(new_book_data)if __name__ == "__main__":main()