Library Management

import math
import os
import random
import re
import sys

class Book:
    def __init__(self, title, genre, rating):
        self.title = title
        self.genre = genre
        self.rating = rating
    
    def get_title(self):
        return self.title
    
    def get_genre(self):
        return self.genre
        
    def get_rating(self):
        return self.rating
        
class LibraryManagement:
    def __init__(self):
        self.books_list = []
        self.rating_dict = {}
        self.genre_dict = {}
        
    def add_book(self, book):
        self.books_list.append(book)
        
    def get_highest_rated_books(self, x):
        for i in self.books_list:
            self.rating_dict[i] = i.get_rating()
        
        sorted_dict = {key: value for key, value in sorted(self.rating_dict.items(), key=lambda item: item[1], reverse=True)}
        
        ls = list(sorted_dict.keys())[:x]
        return ls
        
    def recommend_top_book_by_genre(self, genre):
        for i in self.books_list:
            self.genre_dict[i] = i.get_genre()
        
        book_by_genre = [k for k,v in self.genre_dict.items() if v==genre]
        new_rating_dict = {}
        for i in book_by_genre:
            new_rating_dict[i] = i.get_rating()
        
        new_sorted_dict = {key: value for key, value in sorted(new_rating_dict.items(), key=lambda item: item[1], reverse=True)}
        
        required_book = list(new_sorted_dict.keys())
        if len(required_book) > 0:
            return required_book[0]
        else:
            pass
            

def main(path) -> None:
    fptr = open(path, 'w')
    num = int(input())
    library = LibraryManagement()
    for i in range(num):
        title, genre, rating = input().split(",")
        library.add_book(Book(title, genre, float(rating)))

    recommended_count = int(input())
    genre = input()
    
    highest_rated_books = library.get_highest_rated_books(recommended_count)
    book_by_genre = library.recommend_top_book_by_genre(genre)
    
    for book in highest_rated_books:
        fptr.write(f"Highest Rated Book: {book.title}, Rating: {book.rating}\n")

    if book_by_genre:
        fptr.write(f"Top Recommended Book in Programming Genre: {book_by_genre.title}, Rating: {book_by_genre.rating}\n")
    else:
        fptr.write("No books found in the specified genre.\n")
    fptr.close()

if __name__ == "__main__":
    env_var = "OUTPUT_PATH"
    path = os.environ[env_var] if env_var in os.environ.keys() else "/dev/stdout"
    main(path)