price_range = [0, 1000000, 5000000, 10000000, 50000000, 100000000, 1000000000]  # 中标金额区间划分
material = [0.015, 0.011, 0.008, 0.005, 0.0025, 0.0005]  # 物资费率
service = [0.015, 0.008, 0.0045, 0.0025, 0.0001, 0.0005]  # 服务费率
process = [0.01, 0.007, 0.0055, 0.0035, 0.002, 0.0005]  # 工程费率


def service_charge_calculation(price, item):
	# 设置累加部分初始值为0
	result1 = 0
	# 定义列表，拿到下标范围
	a_list = []
	for i in range(6, 0, -1):
		if price >= price_range[i]:
			a_list.append(i)
	# print(a_list)
	
	# 计算累加部分result1
	for i in a_list:
		# print(i)
		result_accumulate = (price_range[i] - price_range[i - 1]) * item[i - 1]
		# print(result_accumulate)
		result1 += result_accumulate
	
	# 计算超出标准部分result0
	if price < price_range[1]:
		result0 = price * item[0]
	else:
		result0 = (price - price_range[a_list[0]]) * item[a_list[0]]
	# print(result0)
	
	# 两部分相加
	result = result0 + result1
	print('=========', result)


if __name__ == "__main__":
	service_charge_calculation(8000000, service)

再把小程序优化一下，但是没什么思路，想写成类对象，还想用递归，都没整明白，还是一个函数到底吧，起码比上一版简单点儿了…>_<!