def push():
      element=int(input("Enter an element"))
      stack.append(element)
      print("Element added successfully\n")

def pop():
      if stack==[]:
            print("Stack is empty\n")
      else:
            print("Deleted element is",stack.pop())
      print()

def peek():
      if stack==[]:
            print("Stack is empty-No top element\n")
      else:
            print("Top element is",stack[len(stack)-1])
      print()

def display():
      if stack==[]:
            print("Stack is empty\n")
      else:
            print("The stack is :")
            for i in range(len(stack)-1,-1,-1):
                  print(stack[i])
      print()
      
#__main__ 
stack=[]
while True:
      print("STACK OPERATIONS")
      print("1. Push")
      print("2. Pop")
      print("3. Peek")
      print("4. Display Stack")
      print("5. Exit")
      choice=int(input("Enter your choice\n"))
      if choice==1:
            push()
      elif choice==2:
            pop()
      elif choice==3:
            peek()
      elif choice==4:
            display()
      elif choice==5:
            print("Thank You!!!")
            break
      else:
            print("Choice must be between 1-5\n")

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
4
Stack is empty


STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
1
Enter an element34
Element added successfully

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
1
Enter an element65
Element added successfully

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
4
The stack is :
65
34

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
3
Top element is 65

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
2
Deleted element is 65

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
4
The stack is :
34

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
5
Thank You!!!