addition of list python code example

Example 1: how to calculate the sum of a list in python

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

Example 2: additionner liste python

>>> list = [1,2,3,4]
>>> sum(list)
10

>>> l = ['a',1,'f',3.2,4]
>>> sum([i for i in l if isinstance(i, int) or isinstance(i, float)])
8.2

Example 3: additionner liste python

>>> list = [1,2,3,4]
>>> tot = 0
>>> for i in list:
...     tot = tot + i
... 
>>> tot
10