Here is a clear and standard Python function to reverse a singly linked list. This example assumes a basic singly linked list node defined as: ```python class ListNode: def __init__(self, val=0, next=None): self.val = val self.next = next ``` The function to reverse the linked list iteratively: ```python def reverse_linked_list(head): prev = None current = head while current: next_node = current.next # temporarily store the next node current.next = prev # reverse the current node's pointer prev = current # move prev and current one step forward current = next_node return prev # prev will be the new head at the end ``` If you want a recursive approach, here is one: ```python def reverse_linked_list_recursive(head): if head is None or head.next is None: return head new_head = reverse_linked_list_recursive(head.next) head.next.next = head head.next = None return new_head ``` These implementations are the standard ways to reverse a singly linked list in Python.