SList

class MyNode:
    def __init__(self, value):
        self.nextLink = None
        self.value = value


class MyList:

    def __init__(self):
        self.head = None
        self.length = 0

    def insert(self, value):
        newNode = MyNode(value)
        newNode.nextLink = self.head
        self.head = newNode
        self.length+=1

    def size(self):
        return self.length

    def pop(self, value):
        temp = self.head
        i=self.length
        while(i > value):
            i-=1
            temp = temp.nextLink
        return temp.value
        self.length-=1

list = MyList()

list.insert(5)
list.insert(7)
list.insert(1)

print(list.pop(1))