编写一个计算机快递费的程序

编写一个计算快递费用的简单程序通常会涉及以下几个步骤，这里我会用伪代码的形式来描述：

class Package:
    def __init__(self, weight, dimensions):
        self.weight = weight
        self.dimensions = dimensions

    def calculate_basic_fee(self):
        # 基础运费通常按重量计价
        return self.weight * base_rate_per_kg

    def calculate_dimensional_fee(self):
        # 尺寸运费通常是长宽高的立方值
        return (self.dimensions[0] * self.dimensions[1] * self.dimensions[2]) * dimension_rate_per_cm^3

    def calculate_total_fee(self):
        basic_fee = self.calculate_basic_fee()
        dimensional_fee = self.calculate_dimensional_fee()
        return basic_fee + dimensional_fee

def calculate_shipping_cost(package_data):
    package = Package(package_data['weight'], package_data['dimensions'])
    total_fee = package.calculate_total_fee()
    return total_fee

# 示例数据
package_data = {'weight': 2, 'dimensions': [10, 20, 5]}
shipping_cost = calculate_shipping_cost(package_data)
print(f"快递费用: {shipping_cost}元")