Coding Challenge description and explanation

sum_two_smallest_numbers

def sum_two_smallest_numbers(numbers):
        # First let's get rid of any numbers that are below 0.
        # We'll create a new list that will only have positive numbers in it.
        new_list = []
        # Place the positive numbers in the list
        for num in numbers:
            if num >= 0:
                new_list.append(num)
        # Next we need to find the two lowest numbers in the list.
        # There are several possibilities but we'll go with the simplest one.
        # Let's sort the new list from least to greatest
        new_list = sorted(new_list)
        # Now we can just add the numbers at the 0th and the 1st index
        return (new_list[0] + new_list[1])