如何使用JSON数据将包含2列的CSV数据格式化为字典？

import csv

def read_csv(file_path):
    data = []
    with open(file_path, 'r') as csvfile:
        csvreader = csv.reader(csvfile)
        for row in csvreader:
            data.append(row)
    return data

import json

def format_data(csv_data):
    formatted_data = []
    headers = csv_data[0]  # 第一行作为字典的键
    for row in csv_data[1:]:  # 从第二行开始遍历
        entry = {}
        for i in range(len(headers)):
            entry[headers[i]] = row[i]
        formatted_data.append(entry)
    json_data = json.dumps(formatted_data)
    return json_data

def save_json(json_data, file_path):
    with open(file_path, 'w') as jsonfile:
        jsonfile.write(json_data)
    print("JSON data saved successfully.")

# 使用示例
csv_data = read_csv('data.csv')
json_data = format_data(csv_data)
save_json(json_data, 'data.json')