如何删除链表中c为零值的节点

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

def deleteZeroNodes(head):
    # 处理头节点为零的情况
    while head and head.val == 0:
        head = head.next
    
    # 处理链表中间的零值节点
    curr = head
    while curr and curr.next:
        if curr.next.val == 0:
            curr.next = curr.next.next
        else:
            curr = curr.next
    
    return head