How do I create custom exceptions in Python?

How do I create custom exceptions in Python?

Creating custom exceptions in Python is straightforward. You can define a new exception class by inheriting from the built-in Exception class.

Can you show me an example of a custom exception?

Sure! Here's a simple example:

class MyCustomError(Exception):
    pass

raise MyCustomError('This is a custom error!')

What should I include in my custom exception?

You can include a message, error code, or any additional attributes that help describe the error. For example:

class MyCustomError(Exception):
    def __init__(self, message, error_code):
        super().__init__(message)
        self.error_code = error_code

How do I handle my custom exceptions?

You can handle custom exceptions using try-except blocks, just like built-in exceptions. For example:

try:
    raise MyCustomError('An error occurred', 404)
except MyCustomError as e:
    print(f'Caught an error: {e}, Code: {e.error_code}')