1_integer_sum module

Sum of Integers Up To n

Write a function, add_it_up(), that takes a single positive integer as input and returns the sum of the integers from zero to the input parameter included.

The function should return 0 if a non-integer is passed in.

1_integer_sum.add_it_up(integer: int) → int

Sum all the integers from 0 to integer.

integer must be a positive integer number, otherwise 0 is returned.

Parameters

integer (int) – positive integer number.

Returns

sum of all positive integers up to integer included; 0 if integer is not a positive integer.