$1.$ Write a program which can add, read, and delete diary notes. In your program, de fine four functions:

a$)$addNote$($note$,$ filename$)$: This function appends the note entered by the user to the file. But before appending the note, the function should concatenate the current date to the note $($in $$dd$/$mm$/$yyyy$$ format$).$ Use the datetime module for that. The function takes two arguments: note $($str$)$ and filename $($str$).$

b$)$readDayNote$($date$,$ filename$)$: This function should return the notes of the given date as a list. The function takes two arguments: date $($str in $$dd$/$mm$/$yyyy$$ format$)$ and filename $($str$).$

c$)$readAllNotes$($filename$)$: This function should return all notes in the file as a list. The function takes one argument: filename $($str$).$

d$)$deleteNote$($date$,$ filename$)$: This function should delete one note of the given date. If there are several notes for the given date, then it should show all of them $($as a numbered list$)$ to the user and ask the user to choose one from the list to delete. The chosen note should be deleted. The function takes two arguments: date $($str in $$dd$/$mm$/$yyyy$$ format$)$ and filename $($str$).$

Your program should keep prompting the user to choose one of the four operations $($add note $($a$),$ read day note $($r$),$ read allc$($s$),$ and delete note $($d$))$ until the user enters $$end$.$ Here is how it should work:

$$If the user chooses to add a note, the program should ask the user to enter a note and pass that note to the addNote function.

$$If the user chooses to read a note of a particular date, then the program asks the user to enter a date and passes that to the readDateNote function and print the returned value.

$$If the user chooses to read all notes, the program should call the readAllNotes function and print the returned value.

$$If the user chooses to delete a note, the program should ask a date and pass it to the deleteNote function.