Stack Implemented as a LinkedList in Python

In preparation for interviews, I am attempting to write a Stack as a LinkedList in python. This is what I came up with:

 class Stack:  
   class Element:  
     def __init__(self, data=None, next=None):  
       self.next = next  
       self.data = data  
         
     def __repr__(self):  
       return str(self.data)  
       
   def __init__(self):  
     self.head = self.Element()  
       
   def push(self, data):  
     newHead = self.Element(data=data, next=self.head)  
     self.head = newHead  
     
   def pop(self):  
     head = self.head  
     self.head = head.next  
     return head  
     
   def delete(self):  
     self.head = None  

If anyone sees anything wrong, please let me know!