The `yield from` statement in Python is used within a generator function to delegate part of its operations to another generator. This allows one generator to yield values from another generator, simplifying the code and improving readability. It effectively creates a bridge between two generators, enabling the outer generator to yield all values produced by the inner generator. When using `yield from`, the outer generator can also receive values sent to it, which can be useful for managing state or handling input. This feature enhances the functionality of generators, making it easier to compose complex generator behaviors without excessive boilerplate code.