class Solution:
    def plusOne(self, digits):
        numberString = ""
        for n in digits:
            numberString += str(n)

        number = int(numberString) + 1
        final = []
        for digit in str(number):
            final.append(int(digit))
        return final

s = Solution()
print("Expected: [1, 2, 4]")
print("Got:", str(s.plusOne([1, 2, 3])))