Question: 
Write a function of recursion list sum.


Model's Code:
def recursive_list_sum(lst):
    total = 0
    for item in lst:
        if isinstance(item, list):
            total += recursive_list_sum(item)
        else:
            total += item
    return total



Sample Correct Code:
def recursive_list_sum(data_list):
	total = 0
	for element in data_list:
		if type(element) == type([]):
			total = total + recursive_list_sum(element)
		else:
			total = total + element
	return total


Asserts:
assert recursive_list_sum(([1, 2, [3,4],[5,6]]))==21
assert recursive_list_sum(([7, 10, [15,14],[19,41]]))==106
assert recursive_list_sum(([10, 20, [30,40],[50,60]]))==210


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 65 of 974: 50/65 (76.92307692307693%): success