Nupur0503

#check for two numbers in a sequence to add up to a given number
def sum_of_two_numbers(self, num, limit):

    list()

#condition to for the addition
    for i in range (0, len(list)):
        if target - num in list:
            return (list[limit - num] + 1, i + 1)
        list[num] = i

Nupur0503

class Author:
    
    def __init__(self, firstname, lastname):
        self.firstname = firstname
        self.lastname = lastname
    def __str__(self):
        return str(self.firstname) + ' ' + (self.lastname)

class Book: