请教Python写入CSV文件的问题

#!/usr/bin/env python
# -*- encoding: utf-8 -*-


import csv

def write_data(info):
    with open('test.csv','a',newline='') as f:
        filed = ['书名','百度网盘链接','提取码']
        writer = csv.DictWriter(f,fieldnames=filed)
        writer.writeheader()
        try:
            writer.writerows(info)
        except:
            pass

info = [
    {'书名': '凯恩舰哗变', '提取码': 'pnus', '百度网盘链接': 'https://pan.baidu.com/s/1U_4lhaAfx6_BqJYCTml3wQ'},
    {'书名': '战争风云', '提取码': 'mfa9', '百度网盘链接': 'https://pan.baidu.com/s/1aQgdhf9Tw8-9o7aAY4mnkg'},
    {'书名': '走近费曼丛书（套装共6册）', '提取码': '6gts', '百度网盘链接': 'https://pan.baidu.com/s/1gKgiqRTgUFJyGIw9podUCQ'},
    {'书名': '花开尘埃•蔓生苍华:民国才女经典书系', '提取码': 'aycv', '百度网盘链接': 'https://pan.baidu.com/s/1vXEpeK8C4vR3xDXLq4r1Lg'},
    {'书名': '数学之美', '提取码': '7inb', '百度网盘链接': 'https://pan.baidu.com/s/1SdfZy7kZBIw_lmcsXOTOQw'},
    {'书名': '向着光亮那方:谁的青春不迷茫系列', '提取码': 'ys3r', '百度网盘链接': 'https://pan.baidu.com/s/1ZQ6eUYmUNi0khhBRS-ILaQ'},
    {'书名': '向着大地和天空,凡人和诸神:海德格尔导读', '提取码': 'dujx', '百度网盘链接': 'https://pan.baidu.com/s/1M4OLu45R2PsMzNOZTmfNDg'},
    {'书名': '中国传世古典TOP50大书系', '提取码': '3usd', '百度网盘链接': 'https://pan.baidu.com/s/1lsIeYDc3RZ3rCyNbdgu0ZQ'},
    {'书名': '读者200期合订本（1981~1997）', '提取码': 'rk3b', '百度网盘链接': 'https://pan.baidu.com/s/1VBYpZUjTgllGutCBFDZ0wg'},
    {'书名': '道德经全鉴(典藏版)', '提取码': 'pjje', '百度网盘链接': 'https://pan.baidu.com/s/1SA3XfMC957BjnDshuyAu9A'},
    {'书名': '最忆西窗同剪烛：纳兰容若词全集', '提取码': '7v57', '百度网盘链接': 'https://pan.baidu.com/s/1NURvyhZODk42xb6oa1ST-Q'},
    {'书名': '第九届茅盾文学奖获奖作品全集', '提取码': 'jmgx', '百度网盘链接': 'https://pan.baidu.com/s/1Hsb2EUGjih5uhhvlUpmotg'},
    {'书名': '钱穆作品集7本', '提取码': 'gcm4', '百度网盘链接': 'https://pan.baidu.com/s/1BSVcAeIoy29ni_OH2PKvQg'},
    {'书名': '吕思勉文集9本', '提取码': 'qt4x', '百度网盘链接': 'https://pan.baidu.com/s/1X-i8PX7AajbRWlVMare5lg'}
]

if __name__ == "__main__":
    write_data(info)