0203-remove-linked-list-elements.py

class Solution:
    def removeElements(self, head: ListNode, val: int) -> ListNode:
        dummy = ListNode(next=head)
        prev, curr = dummy, head
        
        while curr:
            nxt = curr.next
            
            if curr.val == val:
                prev.next = nxt
            else:
                prev = curr
            
            curr = nxt
        return dummy.next