This is my dvtest.csv file and I want to make a function that can make the 'Number of copies' updated(eg. 3 -> 2, 2->1, 4->3, 5->4, 2->1) when a person tries to rent the movie. The function should have to get the correct movie title listed below(to know what movie that the customer wants to rent) and also get the customer's name who's trying to rent.with Python

Movie title, Stars name, Producer name, Director name, Production name, Number of copies Hi, Daniel Joan, Kaki Flynn, Jaume Dealan, Cat Films, 3 Cat, Berok Wat, Jerry Gobis, Lukas Kosinski, North Pictures, 2 Robster Party, Benjamin Luck, Jason Cooper, Jordan Mike, WB, 4 Boston, Taylor Milar, Catherine Jacy, Bassy Jane, Cloud Entertainment, 5 Nope, Janet Kaluuya, Ivan Jakelin, Norik Palyn,Jay Productions, 2