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Return from a tasklet in Python 2.
Inherits From: expected_type
In Python 2, generators may not return a value. In order to return a value from a tasklet, then, it is necessary to raise an instance of this exception with the return value:
@ndb.tasklet
def get_some_stuff():
future1 = get_something_async()
future2 = get_something_else_async()
thing1, thing2 = yield future1, future2
result = compute_result(thing1, thing2)
raise ndb.Return(result)
In Python 3, you can simply return the result:
@ndb.tasklet
def get_some_stuff():
future1 = get_something_async()
future2 = get_something_else_async()
thing1, thing2 = yield future1, future2
result = compute_result(thing1, thing2)
return result