When should we use try catch?

You should use a try-catch block in your code when you anticipate that a certain section of your code might raise an exception (error), and you want to handle that exception gracefully instead of letting it crash your program. The try block contains the code where you suspect an exception might occur, and the catch block (also known as the except block in some programming languages) contains the code that specifies what to do if an exception occurs within the try block. This helps prevent unexpected crashes and allows you to handle errors in a controlled manner.