我有一个快速的问题要问大家。我目前正在使用样机预订系统，如果用户飞行常客（折扣率为10％），则很难显示折扣总额。下面是我的代码：
user_people = int(raw_input("Welcome to Ramirez Airlines! How many people will be flying?"))
user_seating = str(raw_input("Perfect! Now what type of seating would your party prefer?"))
user_luggage = int(raw_input("Thanks. Now for your luggage, how many bags would you like to check in?"))
user_frequent = str(raw_input("Got it. Is anyone in your party a frequent flyer with us?"))
user_continue = str(raw_input("Your reservation was submitted successfully. Would you like to do another?"))
luggage_total = user_luggage * 50
import time
print time.strftime("Date and time confirmation: %Y-%m-%d %H:%M:%S")
seats_total = 0
if user_seating == 'economy':
seats_total = user_people * 916
print ('The total amount for your seats is: $'),seats_total
elif user_seating == 'business':
seats_total = user_people * 2650
print ('The total amount for your seats is: $'),seats_total
else:
print ('The total amount for your seats is: $'),user_people * 5180
print ('The total amount of your luggage is: $'),luggage_total
print ('Your subtotal for your seats and luggage is $'), luggage_total + seats_total
discount_amount = 0
discount_rate = 0.10
if user_frequent == 'yes':
before_discount = luggage_total + seats_total
after_discount = before_discount * discount_rate
discount_amount = before_discount - after_discount
print discount_amount
else:
print ('Sorry, the discount only applies to frequent flyers!')
当我没有收到错误时，我的输出不正确。这是正在显示的内容：
Discount amount of 1738.8
这显然是不正确的，因为这是折扣后的价格。我正在尝试显示总折扣以及已应用折扣后的价格。
任何帮助，将不胜感激！谢谢！
最佳答案
您有多个错误。首先，在第一个else的if中，您不计算seat_total，因此以下计算将崩溃-您只需执行
print ('The total amount for your seats is: $'),user_people * 5180
而不是明显需要的
seat_total = user_people * 5180
print ('The total amount for your seats is: $'), seat_total
（括号是没有用的，但是它们没有伤害，所以我让它们成为：-）。
其次，查看折扣的逻辑：
discount_rate = 0.10
if user_frequent == 'yes':
before_discount = luggage_total + seats_total
after_discount = before_discount * discount_rate
discount_amount = before_discount - after_discount
您非常明确地说，用户以折扣价格支付标价的1/10，然后在Q中抱怨它！-）
同样，这很明显（对于在字里行间的人来说，这对计算机来说是绝对不对的：-）与您所说的形成鲜明对比的是，您实际上的意思是：
discount_rate = 0.10
if user_frequent == 'yes':
before_discount = luggage_total + seats_total
discount_amount = before_discount * discount_rate
after_discount = before_discount - discount_amount
关于python - 在Python 2.7中应用折扣并显示折扣率，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/28870545/