Python Tutorial 39 Custom Exceptions HNLK5GAZjDA - Complete Information & Details

Web Reference: Jul 23, 2025 · To define a custom exception in Python, you need to create a new class that inherits from the built-in Exception class or one of its subclasses. Here’s a basic example: In Python, we can define custom exceptions by creating a new class that is derived from the built-in Exceptionclass. Here's the syntax to define custom exceptions, Here, CustomError is a user-defined error which inherits from the Exceptionclass. In practice, you’ll want to keep the custom exceptions organized by creating a custom exception hierarchy. The custom exception hierarchy allows you to catch exceptions at multiple levels, like the standard exception classes.

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