Write add(Book) and delete(Books) methods in Python to add Books and Remove Books considering them to act

Q. Write add(Book) and delete(Books) methods in Python to add Books and Remove Books considering them to act as append() and pop() operations in Stack.

Answer =

def add(Book) :
    stack.append(Book)
def delete(Book) :
    stack.remove(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 the book name :- ")
        add(Book)
    elif user == "delete" :
        if stack == [ ]:
            print("UnderFlow")
        else :
            Book = input("Enter the Book :-")
            delete(Book)
    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 the book name :- Pathwalla
Now our stack =  ['Pathwalla']

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 the book name :- Computer Portal
Now our stack =  ['Pathwalla', 'Computer 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:- insert
Enter the book name :- Portal
Now our stack =  ['Pathwalla', 'Computer Portal', '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 the Book :-Portal
Now our stack =  ['Pathwalla', 'Computer 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:- exit
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