Merge Nodes in Between Zeros LeetCode solution in Python

1
class Solution:
2
    def mergeNodes(self, head: Optional[ListNode]) -> Optional[ListNode]:
3
        d = ListNode(0)
4
        t = 0
5
        r = ListNode(0, d)
6
        while head:
7
            if head.val != 0:
8
                t += head.val
9
            else:
10
                print(t)
11
                if t != 0:
12
                    d.next = ListNode(t)
13
                    d = d.next
14
                    t = 0
15
            head = head.next
16
        return r.next.next