I'm not sure we need an example for this. At least not in its current form. http://bugs.python.org/review/14911/diff/10905/Doc/reference/expressions.rst File Doc/reference/expressions.rst (right): http://bugs.python.org/review/14911/diff/10905/Doc/reference/expressions.rst... Doc/reference/expressions.rst:451: generator.send(foo()) Actually, I have a question: did you mean something like: try: result = foo() except Exception as ex: generator.throw(ex.with_traceback(None)) else: generator.send(result) ? http://bugs.python.org/review/14911/