从CSV中读取两列变量，同时对这两列变量执行某些操作？

import csv

def read_csv_and_calculate(csv_file):
    with open(csv_file, 'r') as file:
        reader = csv.reader(file)
        header = next(reader)  # 读取CSV文件的头部
        column1_index = header.index('Column1')  # 获取第一列的索引
        column2_index = header.index('Column2')  # 获取第二列的索引
        sum_result = 0

        for row in reader:
            column1_value = float(row[column1_index])  # 获取第一列的值
            column2_value = float(row[column2_index])  # 获取第二列的值
            sum_result += column1_value + column2_value

    return sum_result

csv_file = 'data.csv'
result = read_csv_and_calculate(csv_file)
print('Sum of Column1 and Column2:', result)