leetcode-grind/problems/1480/main.py

class Solution:
    def runningSum(self, nums):
        run = 0
        res = []
        for x in nums:
            run = run + x
            res.append(run)
        return res

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