如何将带有数组的json转换为csv？

import json
import csv

# 示例的JSON数据
json_data = '''
{
  "students": [
    {
      "name": "Alice",
      "age": 20,
      "grades": [85, 90, 95]
    },
    {
      "name": "Bob",
      "age": 22,
      "grades": [75, 80, 85]
    }
  ]
}
'''

# 解析JSON数据
data = json.loads(json_data)

# 提取数组数据
students = data["students"]

# 定义CSV文件路径
csv_file = "output.csv"

# 写入CSV文件
with open(csv_file, mode='w', newline='') as file:
    writer = csv.writer(file)
    
    # 写入表头
    writer.writerow(["Name", "Age", "Grades"])
    
    # 写入每个学生的数据
    for student in students:
        name = student["name"]
        age = student["age"]
        grades = ",".join(str(grade) for grade in student["grades"])
        writer.writerow([name, age, grades])

print("转换完成，CSV文件已生成！")