'Make the map from signals to handlers for this instance.
Constructs a map from signal numbers to handlers for this
context instance, suitable for passing to
`set_signal_handlers`.'

def _make_signal_handler_map(self):

    signal_handler_map = dict(((signal_number, self._make_signal_handler(target)) for (signal_number, target) in self.signal_map.items()))
    return signal_handler_map
