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import pyutilib.workflow
class TaskA(pyutilib.workflow.Task):
def __init__(self, *args, **kwds):
"""Constructor."""
pyutilib.workflow.Task.__init__(self, *args, **kwds)
self.inputs.declare('x')
self.inputs.declare('y')
self.outputs.declare('z')
def execute(self):
"""Compute the sum of the inputs."""
self.z = self.x + self.y
# @class:
class TaskD(pyutilib.workflow.Task):
def __init__(self, *args, **kwds):
"""Constructor."""
pyutilib.workflow.Task.__init__(self, *args, **kwds)
self.inputs.declare('X')
self.inputs.declare('y')
self.inputs.declare('a', constant=True)
self.outputs.declare('W')
self.outputs.declare('Z')
def execute(self):
"""Compute the sum of the inputs."""
self.W = self.X+self.y+self.a
self.Z = 2*self.W
# @:class
A = TaskA()
D = TaskD()
D.inputs.a = 100
A.inputs.x = D.outputs.Z
w = pyutilib.workflow.Workflow()
w.add(A)
print(w(X=1, y=3))
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