Search Linked List

The following class schema describes the Node and SLinkedList classes.

class Node:
    def __init__(self, dataval:):
        self.dataval = dataval # Type: Union(int|None)
        self.nextval = None # Type: Union(int|None)


class SLinkedList:
    def __init__(self):
        self.headval = None # Type: Union(Node|None)

Write a function, search_list, that returns a boolean indicating if a value is in the linked_list.

Example:

Input:

target = 2
# diagram of linked_list
3 -> 2 -> 5 -> 6 -> 8 -> None

Output:

search_list(linked_list, target)  -> True