将词典列表导出到csv时出错

import csv

data = [
    {'name': 'Alice', 'age': 30},
    {'name': 'Bob', 'age': 25}
]

with open('output.csv', 'w', newline='', encoding='utf-8-sig') as file:
    writer = csv.DictWriter(file, fieldnames=['name', 'age'])
    writer.writeheader()
    writer.writerows(data)

with open('output.tsv', 'w', newline='', encoding='utf-8-sig') as file:
    writer = csv.writer(file, delimiter='\t')
    writer.writerow(['name', 'age'])
    writer.writerow(['Alice', 30])
    writer.writerow(['Bob', 25])

with open('output.csv', 'w', newline='', encoding='utf-8-sig') as file:
    writer = csv.writer(file, quoting=csv.QUOTE_ALL)
    writer.writerow(['name', 'age'])
    writer.writerow(['Alice, Smith', 30])
    writer.writerow(['Bob "The Builder"', 25])

import os

if not os.access('output.csv', os.W_OK):
    os.chmod('output.csv', 0o666)

with open('output.csv', 'w', newline='', encoding='utf-8-sig') as file:
    writer = csv.writer(file)
    writer.writerow(['name', 'age'])
    writer.writerow(['Alice', 30])
    writer.writerow(['Bob', 25])