how to do the sum of list in python

1# Python code to demonstrate the working of  
2# sum() 
3numbers = [1,2,3,4,5,1,4,5] 
4  
5# start parameter is not provided 
6Sum = sum(numbers) 
7print(Sum) # result is 25  
8# start = 10 
9Sum = sum(numbers, 10) 
10print(Sum) # result is 10 +25 = 35

1def calculate_cards(cards):
2    total= 0
3    for card in cards:
4        total = total + card
5    return total
6print(calculate_cards([11,7,5]))