通过Python将不同大小列表的字典写入CSV

import csv

# 示例数据
list1 = [
    {'name': 'Alice', 'age': 25, 'city': 'New York'},
    {'name': 'Bob', 'age': 30, 'city': 'Los Angeles'}
]

list2 = [
    {'name': 'Charlie', 'age': 35},
    {'name': 'David', 'age': 40, 'city': 'Chicago'}
]

# 合并两个列表
combined_list = list1 + list2

# 写入 CSV 文件
with open('output.csv', 'w', newline='', encoding='utf-8') as csvfile:
    fieldnames = ['name', 'age', 'city']
    writer = csv.DictWriter(csvfile, fieldnames=fieldnames)

    writer.writeheader()
    for item in combined_list:
        writer.writerow(item)

for item in combined_list:
    row = {field: item.get(field, '') for field in fieldnames}
    writer.writerow(row)

with open('output.csv', 'w', newline='', encoding='utf-8') as csvfile:
    # 写入操作