What are some examples of custom exceptions in programming?

Can you give me some examples of custom exceptions in Python?

Sure! In Python, you can create a custom exception by subclassing the built-in Exception class. For example:

class MyCustomError(Exception):
    pass

What would be a good use case for a custom exception?

A good use case for a custom exception is when you want to handle specific errors in your application, like validating user input. For instance, you could create a ValidationError to raise when user input doesn't meet certain criteria.

How do I raise a custom exception?

You can raise a custom exception using the raise keyword. For example:

raise MyCustomError('This is a custom error message.')

Can I catch custom exceptions separately?

Yes, you can catch custom exceptions separately using a try-except block. For example:

try:
    # some code that may raise an exception
except MyCustomError as e:
    print(f'Caught an error: {e}')