我正在做一个程序，根据客户购买的数量给予折扣。

方向如下：

某些在线商店根据购买总额提供折扣：If the purchase total is over $50, a 5% discount is applied

If the purchase total is over $100, a 10% discount is applied

If the purchase total is over $500, a 15% discount is applied

使用if elif else链计算应用任何折扣后的采购金额。对于您的演示，使用499.99美元的购买。

到目前为止，这是我创建的，但它似乎运行不正常，我想知道我能做些什么来改进我的代码，也许我能正确地使用if-elif-else代码。提前谢谢大家。if total_cost>=10:

if give_shopper_5percent_discount():

print"You have won a discount"

total_cost -= discount

candidate_prime =True

elif total_cost>100:

if give_shopper_10percent_discount():

print"You have won a discount"

total_cost -= discount

candidate_prime =True

else total_cost>=500:

if give_shopper_15percent_discount():

print"You have won a discount"

total_cost -= discount

candidate_prime =True