Answer to Question #198523 in Python for Andu

Question

Project 4: Music Store

Implement a program that manages the data of a music store. The store manages the list of CDs that can be bought. For each CD, the store has the following data: album title, singer/band name, recording house, published year, music genre, and a list of song titles.

The data are stored into a json file. The application should manage the following characteristics:

Add a new CD

Remove existing CD

Show all CDs of a given singer/band .    Show all CDs containing a specific song (identified by song title)

Changes need to be stored back in the file. The above functionalities are implemented through methods of a class named TravelAgency. The application interacts with the user through a menu where the user is asked for the next action to undertake (e.g., 1-Add new CD, 2-Remove existing CD, etc.) Put comments in your code.

Answer 1

import pathlib
import json


class CD:
    #Constructor
    def __init__(self):
        self.albumTitle =""
        self.singerBandName =""
        self.recordingHouse =""
        self.publishedYear =0
        self.musicGenre =""
        self.listSongTitles = []
            
        print("")
    #This function allows to add a new CD
    def addData(self):
        self.albumTitle =input("Enter the album title of CD: ")
        self.singerBandName =input("Enter the singer/band name of CD: ")
        self.recordingHouse =input("Enter the recording house of CD: ")
        self.publishedYear =input("Enter the published year of CD: ")
        self.musicGenre =input("Enter the music genre of CD: ")
        self.listSongTitles = []
        numberSongTitles =int(input("Enter the number song titles: "))
        for i in range(0,numberSongTitles):
            self.listSongTitles.append(input("Enter song title: "))
            
        print("")
    #This function allows to set data
    def setData(self,albumTitle,singerBandName,recordingHouse,publishedYear,musicGenre,listSongTitles):
        self.albumTitle=albumTitle
        self.singerBandName=singerBandName
        self.recordingHouse=recordingHouse
        self.publishedYear=publishedYear
        self.musicGenre=musicGenre
        self.listSongTitles=listSongTitles
        
    #This function allows to display CD Information
    def displayCDInformation(self):
        print(f"The album title of CD: {self.albumTitle}")
        print(f"The singer/band name of CD: {self.singerBandName}")
        print(f"The recording house of CD: {self.recordingHouse}")
        print(f"The published year of CD: {self.publishedYear}")
        print(f"The music genre of CD: {self.musicGenre}")
        
        print(f"Song Titles: ")
        for st in self.listSongTitles:
            print(st)


    #This function allows to get album title
    def getAlbumTitle(self):
        return self.albumTitle
    #This function allows to get singer/band name
    def getSingerBandName(self):
        return self.singerBandName
    #This function allows to check if the song exist
    def songExist(self,song):
        for st in self.listSongTitles:
            if st==song:
                return True
        return False
    


def main():
    choice=""
    #list of CDs
    musicStore=[]
    readMusicStore(musicStore)
    
    while choice!="5":
        print("1 - Add a new CD")
        print("2 - Remove Existing CD")
        print("3 - Show all CDs of a given singer/band")
        print("4 - Show all CDs containing a specific song")
        print("5 - Exit Music Store")
        choice=input("Your choice: ")
        if(choice=="1"):#Add a new CD
            newCD=CD()
            newCD.addData()
            musicStore.append(newCD)
            saveMusicStore(musicStore)
            print("A new CD has been added.")
        elif(choice=="2"):#Remove Existing CD
            albumTitleRemove =input("Enter the album title of CD to remove: ")
            isDeleted=False
            for cd in musicStore:
                if cd.getAlbumTitle()==albumTitleRemove:
                    musicStore.remove(cd)
                    print("\nThe CD has been deleted.\n")
                    saveMusicStore(musicStore)
                    isDeleted=True
            if isDeleted==False:
                print("\nThe CD does not exist.\n")
                    
        elif(choice=="3"):#Show all CDs of a given singer/band
            singerBandName =input("Enter the singer/band of CD to show: ")
            exist=False
            for cd in musicStore:
                if cd.getSingerBandName()==singerBandName:
                    cd.displayCDInformation()
                    print("")
                    exist=True
            if exist==False:
                print("\nThe CD does not exist.\n")
        elif(choice=="4"): #Show all CDs containing a specific song
            song =input("Enter the song of CD to show: ")
            exist=False
            for cd in musicStore:
                if cd.songExist(song):
                    cd.displayCDInformation()
                    print("")
                    exist=True
            if exist==False:
                print("\nThe CD does not exist.\n")
        elif(choice=="5"):# exit
            pass
        else:
            print("\nSelect a correct menu item.\n")
#This function allows to save all CDs to the json file
def saveMusicStore(musicStore):
    #File name
    FILE_NAME='Music Store.json'
    #convert the object to a dictionary
    results = [CD.__dict__ for CD in musicStore]
    
    with open(FILE_NAME, "w") as outfile:
        json.dump(results, outfile)
#This function allows to read all CDs from the json file
def readMusicStore(musicStore):
    FILE_NAME='Music Store.json'
    file = pathlib.Path(FILE_NAME)
    if file.exists():
        with open(FILE_NAME,'r+') as file:
            file_data = json.load(file)
            for item in file_data:
                newCD=CD()
                newCD.setData(item['albumTitle'],item['singerBandName'],item['recordingHouse'],item['publishedYear'],item['musicGenre'],item['listSongTitles'])
                musicStore.append(newCD)
                
               
        
    
main()