#! /usr/bin/python3
# music_inventory.py -> Counts the number of records of specific artists given to Mike for his birthday

import pprint

# Create a nested dictionary for the music inventory

birthday_inventory = { 'Jere': {'Beatles': 4, 'Pink Floyd': 3, 'Bob Dylan': 2},
              'Sally': {'Taylor Swift': 8},
              'Luke': {'U2': 10, 'Marvin Gaye': 3, 'Stevie Wonder': 2, 'Beatles': 5},
              'David': {'Justin Bieber': 10, 'Shawn Mendes': 1},
              'Molly': {'Beatles': 6, 'Bob Dylan': 1}}

# Create a function that prints out the total of a specific artist

def findTotal(inventory, artist):
    record_number = 0 # Set the default number of the specific artist to be zero
    for k, v in inventory.items(): # Searching through the key-value pairs to find the nested dictionary
        record_number = record_number + v.get(artist, 0) # Add the number of the specific artist; if it isn't there, just add zero
    return record_number

# Create a function to print out all of the items and frequency in a loop (allows you to use any nested dictionary)

def printItems(inventory):
    for k, v in inventory.items(): # Search in the initial key-value pairs
        for i in v: # Prints out all of the artists
            record_total = findTotal(inventory, i)
            print(record_total)

printItems(birthday_inventory)