class Solution:
    def productExceptSelf(self, nums):
        left = [1]
        right = [1]
        for x in range(1, len(nums)):
            left.append(left[x-1] * nums[x-1])
            
        for x in range(1, len(nums)):
            right.append(1)
            
        for x in range(len(nums) - 2, -1, -1):
            right[x] = right[x+1] * nums[x+1]
            
        result = []
        for x in range(0, len(left)):
            result.append(left[x] * right[x])
            
        return result

s = Solution()
print("Expected: [24, 12, 8, 6]")
print("Got:", s.productExceptSelf([1, 2, 3, 4]))