What are the best practices for using custom exceptions in programming?

What are the best practices for using custom exceptions in programming?

When using custom exceptions, it's important to ensure they are meaningful and specific to the context. You should also inherit from built-in exception classes.

Can you give me an example of a custom exception?

Sure! Here's a simple example: class InvalidInputError(Exception): pass. This custom exception can be raised when user input is invalid.

How should I handle these custom exceptions?

You can handle custom exceptions using try-except blocks. For example: try: ... except InvalidInputError: ... to catch and manage the specific error.

Are there any performance considerations I should be aware of?

Yes, while custom exceptions can improve code clarity, excessive use can lead to performance overhead. Use them judiciously.