def get_track_list(search_term: str, criterion: str, display: int = 10):
    """
    Allows the user to search for tracks by artist or title, then prints and returns the result

    :param search_term: user input used to query spotify
    :param criterion: determines whether to query by artist or track title
    :param display: number of tracks to display in results (default 10)
    :return: data frame of track information and their corresponding IDs
    """

    # Query spotify by artist if such criterion is given, otherwise by track title
    if criterion == 'artist':
        search_result = spotify.get_top_tracks_by_artist(search_term)
    else:
        search_result = spotify.get_tracks(search_term)

    # Construct a data frame of track titles and their albums with query result
    track_data = pd.DataFrame(
        data={
            'Selection Number': list(range(1, len(search_result) + 1)),
            'Song Title': [item['name'] for item in search_result],
            'Album': [item['album']['name'] for item in search_result]
        }
    ).set_index('Selection Number')

    # Create a list of track IDs from the query result
    track_ids = [item['id'] for item in search_result]

    # If the track query is not empty, print the data and return the data and ID list
    if not track_data.empty:
        print('\nWe found the following tracks...\n')
        print_menu(track_data.head(display))
        return track_data, track_ids

    # Otherwise, return None
    else:
        print('\nNo tracks found!')
        return None, None
from helpers import spotify
import helpers
import pprint
import json


def write_to_file(results):
    file_path = helpers.get_file_path('spotify_tracks.json',
                                      subdirectory='results')
    f = open(file_path, 'w')
    f.write(json.dumps(results))
    f.close()


urls = []
search_term = 'Beyonce'
data = spotify.get_tracks(search_term)
write_to_file(data)
# pprint.pprint(data, depth=7)
'''
Challenge: using the same strategy as in file 14, how do
I print all of the album cover images? 
Hint: Here is what the data structure looks like:
https://codebeautify.org/jsonviewer/cbd57f4e

You can also view the results in the results/spotify_tracks.json file.
'''