class ListNode:
    def __init__(self, val=0, next=None):
        self.val = val
        self.next = next

def removeElements(head: ListNode, val: int) -> ListNode:
    dummy = ListNode(0, head)
    cur = dummy
    while cur.next:
        if cur.next.val == val:
            ——————————————————————————————————
            del del_node
        else:
            cur = cur.next
    return dummy.next