def push():
      key=int(input("Enter a key in number :"))
      value=input("Enter a value in words :")
      stack[key]=value
      print("Element added successfully\n")

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

def peek():
      if stack=={}:
            print("Stack is empty-No top element\n")
      else:
            L=list(stack.keys())
            lastkey=L[-1]
            print("Top element is",lastkey,"----",stack[lastkey])
      print()

def display():
      if stack=={}:
            print("Stack is empty\n")
      else:
            print("The stack is :")
            L=list(stack.keys())
            L.reverse()
            for i in L:
                  print(i,"----",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 a key in number :5
Enter a value in words :five
Element added successfully

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
1
Enter a key in number :9
Enter a value in words :nine
Element added successfully

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
1
Enter a key in number :3
Enter a value in words :three
Element added successfully

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
4
The stack is :
3 ---- three
9 ---- nine
5 ---- five

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

STACK OPERATIONS
1. Push
2. Pop
3. Peek
4. Display Stack
5. Exit
Enter your choice
2
Deleted element is (3, 'three')

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

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