This is a playlist application for your songs which is made using python programming language. The users can persistently store their favourite songs using this playlist. This playlist provides features to view your stored songs, add a song to your playlist, edit song name or artist name or both, delete a song in the playlist or clear list which deletes all songs in the user's playlist.

This playlist uses a .csv file named playlist.csv to store the playlist data which is used by programe to view, add, edit, delete and clear songs in playlist

The project.py file is the main programe and it contains the all the code of the playlist and features. Below is the description and explaination for all the function in `project.py file.

1. main: The main function contains a list variable named list and an int variable named id initialized to 0. The programme edits or maipulates this list variable according to user's input and then writes or rewrites playlist.csv file with the data of the list variable to persistently store the playlist data. The id variable is the id of the song in the playlist and the programme references this id which is associated with songs to manipulate songs.

   The main function creates the playlist.csv file if it is not present in the project's directory else it just store data in playlist.csv file to the list variable.

   The main function runs the programme in an infinite loop and the loop breaks when the user enters the exit key. Starting of this loop there is Playlist Menu which asks user for their input and shows menu in form of tables using tabulate library, apart from this, the infinite loop calls the functions to perform the task directed by the user.

2. view_playlist: The view_playlist function displays the songs in the list variable in the form of tables using tabulate library.

3. add_song: The add_song() function add a new song to the playlist. It takes list and id variable along with user entered song and artist and returns an incremented value of id variable by 1.

4. compile_csv: The compile_csv() function takes the list variable and rewrites playlist.csv file with the data of list variable.

5. edit_song: The edit_song() function takes list variable, an edit_id and a new_song both provided by the user. It then replaces the song in the list variable whose id matches with the edit_id with the new_song. It returns the edited list variable.

   Throws error if there is no song whose id matches with edit_id .

6. edit_artist: The edit_artist() function takes list variable, an edit_id and a new_artist both provided by the user. It then replaces the artist in the list variable whose id matches with the edit_id with the new_artist. It returns the edited list variable.

   Throws error if there is no artist whose id matches with edit_id.

7. edit_list: The edit_list() function takes list variable and choice provided by the user and calls edit_song, edit_artist or both according the choice provided by the user and returns the value returned by these functions. It also returns an unchanged list variable if user cancels edit or if the value of choice is invalid.

   Throws error if edit_id does not match id of the song or artist on the list variable.

8. delete_song: The delete_song() function takes list variable and delete_song_id which is provided by the user and then deletes the song whose id matches with delete_song_id in the list variable and then decrement id of all the songs below the deleted song by 1. Then it calls the compile_csv() function to update the playlist. Throws error if there is no song whose id matches with delete_song_id.

9. clear_list: The clear_list() function takes the list variable and deletes elements from second index or second element to the end index. It then calls compile_csv function and returns this edited list and an int whose value is 1.

This file contains functions which tests all function in project.py file except edit_list and main function.

Contains dependencies for the project to run.