GeneratorExit

GeneratorExit is an exception in Python that is raised when the generator's close() method is called or when the generator is iterated to completion. This exception is specifically designed to signal that a generator is being terminated. When a generator is exited using close(), GeneratorExit is raised inside the generator function. The generator can then catch this exception to perform cleanup operations. If the GeneratorExit is not caught within the generator, it propagates out and the generator is terminated. If a generator is exhausted (i.e., all its values have been yielded), it will also implicitly exit, but this does not raise GeneratorExit. GeneratorExit is a subclass of BaseException, making it a more general exception that is often caught by broader exception handling mechanisms if not specifically handled by the generator itself. Its primary purpose is to provide a clean way to signal and handle the shutdown of a generator.