import pyutil as pyu
pyu.get_local_pyinfo()

print(pyu.ps2("python-dotenv"))

from typing import List

class Solution:
  def reverseList(self, head: Optional[ListNode]) -> Optional[ListNode]:
    if not head or not head.next:
      return head

    newHead = self.reverseList(head.next)
    head.next.next = head
    head.next = None
    return newHead

new Solution().reverseList()