Question

这是Python书中的问题：

设计一个程序，要求用户输入一周中每一天的商店销售额。金额应存储在列表中。使用循环计算一周的总销售额并显示结果。

这是我目前在Python代码中所拥有的：

Sunday = int(input("Enter the store sales for Sunday: "))
Monday = int(input("Enter the store sales for Monday: "))
Tuesday = int(input("Enter the store sales for Tuesday: "))
Wednsday = int(input("Enter the store sales for Wednsday: "))
Thursday = int(input("Enter the store sales for Thursday: "))
Friday = int(input("Enter the store sales for Friday: "))
Saturday = int(input("Enter the store sales for Saturday: "))

store_week_sales = [Sunday, Monday, Tuesday, Wednsday, Thursday, Friday, Saturday]

index = 0

我不太确定如何添加循环以便我可以计算一周的总销售额。非常感谢帮助。

Answer 1

试试这个：

total = 0

for store_sale in store_week_sales:
    total += store_sale

print "Total week sales: %.2f" % total

Python在for和（不存在的）foreach之间没有区别，因为for已经迭代了可迭代的元素，而不是遍及索引号。

Answer 2

如果您绝对想要使用for循环，可以这样做 heltonbiker描述。或者，您可以使用函数sum来完成。

sumOfList = sum(store_week_sales);

由于这是for循环的练习，这可能不是你想要的那个，但知道以备将来参考可能会很好。

Answer 3

def main():

    total = 0.0
    daily_sales = [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
    index = 0

    days_of_the_week = ['Sunday', 'Monday', 'Tuesday', 'Wednsday', 'Thursday', 'Friday', 'Saturday']

    for index in range(7):

        print("Enter the amount of sales for", days_of_the_week[index])
        daily_sales[index] = float(input("Enter the sales here: "))

        total += daily_sales[index]

    print("The total sales for the week is $", format(total, '.2f'), sep = ' ')

main()

在列表中添加for循环

3 个答案: