Question: 
Write a function to find the list in a list of lists whose sum of elements is the highest.


Model's Code:
def max_sum_list(lst):
    return max(lst, key=sum)



Sample Correct Code:
def max_sum_list(lists):
 return max(lists, key=sum)


Asserts:
assert max_sum_list([[1,2,3], [4,5,6], [10,11,12], [7,8,9]])==[10, 11, 12] 
assert max_sum_list([[3,2,1], [6,5,4], [12,11,10]])==[12,11,10] 
assert max_sum_list([[2,3,1]])==[2,3,1] 


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

Test 805 of 974: 612/805 (76.0248447204969%): success