#python program to

#demonstrate stack implementation

#using list

stack = []

#append() function to push #element in the stack

▷ stack.append('a')

stack.append("b')

stack.append('c')

print('Initial stack')

print(stack)

#pop() function to pop #element from stack in

#LIFO order

print("\nElements popped from stack:')

print(stack.pop()) print (stack.pop())

print(stack.pop())

print("\nStack after elements are popped:') print(stack)

#uncommenting print(stack.pop()) # will cause an IndexError

# as the stack is now empt