how to use sum in python code example

Example 1: sum() python

numbers = [2.5, 3, 4, -5]

# start parameter is not provided
numbers_sum = sum(numbers)
print(numbers_sum)
# output = 4.5

# start = 10
numbers_sum = sum(numbers, 10)
print(numbers_sum)
# output = 14.5

Example 2: python sum of list

>>> list = [1, 2, 3]
>>> sum(list)
6

Example 3: python sum

a = 3
b = 5
c = sum (a + b)
print(c)