Edit File: _stack.py
from typing import List, TypeVar T = TypeVar("T") class Stack(List[T]): """A small shim over builtin list.""" @property def top(self) -> T: """Get top of stack.""" return self[-1] def push(self, item: T) -> None: """Push an item on to the stack (append in stack nomenclature).""" self.append(item)