def read_bytes(self, num_bytes, callback=None, streaming_callback=None,
                   partial=False):
        future = self._set_read_callback(callback)
        assert isinstance(num_bytes, numbers.Integral)
        self._read_bytes = num_bytes
        self._read_partial = partial
        self._streaming_callback = stack_context.wrap(streaming_callback)
        self._try_inline_read()
        return future
Returns the next step after the given `step`. If no more steps are
dataset/ETHPy150Open RobotWebTools/rosbridge_suite/rosbridge_server/src/tornado/iostream.py/BaseIOStream.read_bytes--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/formtools/wizard/views.py/WizardView.get_next_step