python保存csv

保存字典数据

import csv
item = {'title': '穆斯林的葬礼', 'asin': '', 'url': '', 'brand': ''}
fieldnames = ['title', 'asin', 'url', 'brand']
with open('数据.csv', mode='a', newline='', encoding='utf-8-sig') as f:
    writer = csv.DictWriter(f, fieldnames=fieldnames)
    # 判断表格内容是否为空，如果为空就添加表头
    if not os.path.getsize('数据.csv'):
    	writer.writeheader()  # 写入表头
    writer.writerows([item])

保存列表数据

urls = ['https://www.xx.com', 'https://www.yy.com']
with open(search_goods + '.csv', mode='a', newline='', encoding='utf-8-sig') as f:
    csv_writer = csv.writer(f, delimiter=',')
    csv_writer.writerow([urls])