Method peek

data_structures/stacks/stack.py:38–41

Peek at the top-most element of the stack.

(self)

            raise IndexError('pop from an empty stack')

    def peek(self):
        """ Peek at the top-most element of the stack."""
        if self.stack:
            return self.stack[-1]

    def is_empty(self):
        """ Check if a stack is empty."""