Iteration construct for event-driven code. Takes three
arguments:
- Some kind of iterable object
- A callback to call on each item in the iteration
- A callback to call after the iteration terminates.
The item callback receives two arguments: the callable iterator
object and the current value of the iteration. It should call the
iterator (or arrange for the iterator to be called) when it is time
to continue to the next item in the iteration.
The termination callback receives no arguments.
Definition at line 26 of file async.py.