stack-array.py

class Stack:
    def __init__(self):
        self.items = []

    def push(self, value):
        self.items.append(value)

    def pop(self):
        return self.items.pop()

    def isEmpty(self):
        return len(self.items) == 0

    def top(self):
        return self.items[-1]


if __name__ == '__main__':
    stack = Stack()

    stack.push(1)
    stack.pop()

    stack.push(2)
    stack.push(3)
    stack.push(4)
    stack.push(5)

    while not stack.isEmpty():
        print(stack.pop())