作业：销售税python程序答案

【问题标题】：Homework: Sales Tax python program作业：销售税python程序
【发布时间】：2015-03-18 00:30:01
【问题描述】：

我正在用 Python 解决家庭作业问题。我正在尝试创建一个计算销售税的程序。我需要给用户一个选项来设置要计算的开始率和要计算的结束率。然后程序将计算开始和结束之间的所有整数（例如，开始 = 5%，结束 = 8%，它将计算 5、6、7、8 % 税。

我被要求使用此代码：

while begin <= 0 or begin > 10:
    begin = int(input("Enter tax rate: "))

我还必须使用 for 循环。我必须给用户 3 个提示：销售价格、开始率、结束率。然后程序会为用户提供一个费率和总价表：

我被 for 循环和合并 while 语句难住了

我正处于一个非常开始的过程：

productprice = float(input("Enter the product price: "))
begin = float(input("Enter tax rate: "))

total = productprice + productprice * begin/100
print total
raw_input ("Enter to exit")

【问题讨论】：

标签： python for-loop

【解决方案1】：

像这样？

price = float(input("Enter the product price: "))

# declare begin and end variables as empty strings to start
begin = ""
end = ""

# the while loops are to make sure the user inputs a tax rate that 
# is more than 0 and less than 10
while begin <= 0 or begin > 10:
    begin = int(input("Enter tax rate: "))

while end <= 0 or end > 10:
    end = int(input("Enter end tax rate: "))    

# does the math for every integer between beginning and end, prints a 'table'   
for x in range(begin,end+1):
    total = price + price * x/100
    print "Price: "+str(price)+"\tTax: "+str(x)+"\tTotal: "+str(total)
    x += 1


raw_input ("Enter to exit")

输出：

Enter the product price: 100
Enter tax rate: 6
Enter end tax rate: 9
Price: 100.0    Tax: 6  Total: 106.0
Price: 100.0    Tax: 7  Total: 107.0
Price: 100.0    Tax: 8  Total: 108.0
Price: 100.0    Tax: 9  Total: 109.0
Enter to exit

【讨论】：