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Guys how I can sum this on the end?
#This is th code: cart = [15, 42, 120, 9, 5, 380] discount = int(input()) total = 0 i=0 for total in cart: total= total-(total*discount/100) print(total) I want "total" sum all of them. Thanks
7 Réponses
+ 3
Do you mean to sum all the cart's item after giving discount?
If it is, then you can do like this:
https://code.sololearn.com/ca119a20a10a
You can also use the map() function to do this:
https://code.sololearn.com/c6A13A5776a2
+ 2
total = sum(cart)
discount_num = total*discount/100
gtotal = total - discount_num
print(gtotal, discount_num)
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https://code.sololearn.com/ca185A11A10A
cart = [15, 42, 120, 9, 5, 380]
discount = int(input())
total = 0
i=0
for a in cart:
total= total+a
total=total-(total*discount)/100
print(total)
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You wrote :
for total in cart, thats wrong.
You have to use
for i in cart:
i are the numbers in the list cart. You can it named like you want, x,y or what ever.
Then look at the formula:
total += i + (i*discount/100)
Do you understand that, if not please ask again.
cart = [15, 42, 120, 9, 5, 380]
discount = int(input())
total = 0
#i = 0
for i in cart:
total += i + (i*discount/100)
print(total)
0
One Liner :
dis = int(input('Enter Discount : ')); res = round(sum([round(i-(i*(dis/100)),5) for i in [15,42,120,9,5,380]]),5); print(res)
Here I have compressed the expression using only two variables.
The dis var is used to take the input from user.
The res uses list comprehension to retrieve a new list of discounted prices rounded and then with the sum() build-in funtion is found the sum of this list, surely rounded.
Other ideas were great, but you can do it short and easy 😄.
However you can understand this code by breaking up to different variables 😀.
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cart = [15, 42, 120, 9, 5, 380]
dis = int(input())
total = 0
i=0
sum = ""
for t in cart:
t -= round(t*dis/100)
sum += str(t)
print(sum)
0
Here is the correction in your code :
----------------------Code-----------
for i in cart:
total = total + (i -(i*discount/100))
print (total)
-----x-------x--------
This will show the net total.
Your mistake : you used total variable to iterate through cart. But we need to use any other variable for iteration only so it doesn't affect the net total value.
How it works :
We used i to iterate through cart.
In each iteration we added the discounted price to the total.
So in the end after the loop we have the net sum ( total ) of all items in cart. And so we printed the value at the end.