"""node that generates a sine wave""" class SineGenerator(Node): def op(self, input, output, stateaccess): # input and output have names output.sin = stateaccess.magnitude * math.sin(stateaccess.phase+input.time) """ # dict-style access for names with spaces output['sin'] = input['ti me'] # underscore magic for accessing names with spaces-- the port object makes # this work output.sin=input.ti_me input.time = input.money """ def getports(self): return OutputPort('sin'), InputPort('time'), InputPort('money')