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import pyutilib.workflow
# @code:
class TaskA(pyutilib.workflow.Task):
def __init__(self, *args, **kwds):
pyutilib.workflow.Task.__init__(self, *args, **kwds)
self.inputs.declare('x', constant=True)
self.inputs.declare('y')
self.outputs.declare('z')
def execute(self):
"""Compute the sum of the inputs."""
self.z = self.x + self.y
class TaskZ(pyutilib.workflow.Task):
def __init__(self, *args, **kwds):
pyutilib.workflow.Task.__init__(self, *args, **kwds)
self.inputs.declare('z', action='store_any')
self.outputs.declare('z', self.inputs.z)
def execute(self):
pass
B = pyutilib.workflow.TaskFactory('workflow.switch')
A1 = TaskA()
A1.inputs.x = 1
B.add_branch('a', A1)
A2 = TaskA()
A2.inputs.x = -2
B.add_branch('b', A2)
Z = TaskZ()
Z.inputs.z = A1.outputs.z
Z.inputs.z = A2.outputs.z
w = pyutilib.workflow.Workflow()
w.add(B)
print("Branch a")
print(w(value='a', y=100))
w.reset()
print("Branch b")
print(w(value='b', y=100))
# @:code
try:
print(w(value='c', y=100))
except ValueError:
pass
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