Write PUSH (Books) and POP (Books) methods, in python to add Books and remove book

Q. Write PUSH (Books) and POP (Books) methods, in python to add Books and remove book considering them to act as Push and Pop operations of Stack.

Answer :-

def POP(Books):
      Books.pop()
      return Books

def Push (Book):
      stack.append(Book)

stack = [ ]
while True :
      print()
      print("Enter your choice as per given -")
      print("1 = For insert data Enter insert ")
      print("2 = For delete data enter delete ")
      print("3 = For Exit  enter exit ")
      print()
      user = input("Enter your choice :- ")
      if user == "insert" :
            Book = input("Enter name of Book :- ")
            Push (Book)
      elif user == "delete" :
            if stack == [ ]:
                  print("UnderFlow")
            else :
                  stack = POP(stack)
      else :
            break
print("Now our stack = ",stack)

Output :-

Enter your choice as per given -
1 = For insert data Enter insert 
2 = For delete data enter delete 
3 = For Exit  enter exit 

Enter your choice :- insert
Enter name of Book :- Path

Enter your choice as per given -
1 = For insert data Enter insert 
2 = For delete data enter delete 
3 = For Exit  enter exit 

Enter your choice :- insert
Enter name of Book :- Walla

Enter your choice as per given -
1 = For insert data Enter insert 
32 = For delete data enter delete 
3 = For Exit  enter exit 

Enter your choice :- delete

Enter your choice as per given -
1 = For insert data Enter insert 
2 = For delete data enter delete 
3 = For Exit  enter exit 

Enter your choice :- insert

Enter name of Book :- Portal

Enter your choice as per given -
1 = For insert data Enter insert 
2 = For delete data enter delete 
3 = For Exit  enter exit 

Enter your choice :- delete

Enter your choice as per given -
1 = For insert data Enter insert 
2 = For delete data enter delete 
3 = For Exit  enter exit 

Enter your choice :- insert
Enter name of Book :- Express

Enter your choice as per given -
1 = For insert data Enter insert 
2 = For delete data enter delete 
3 = For Exit  enter exit 

Enter your choice :- exit
Now our stack =  ['Path', 'Express']
>>>