name 'net' is not defined

[malcomoner]

I keep getting this error. I am trying to learn PySmile using SMILE and running the tutorial in the guidebook. I have attached the code below. Does anyone know what the issue is? I am following the steps as written but cannot get passed the third step.


class Tutorial1:
def __init__(self):
print("Starting Tutorial1...")
net = pysmile.Network()

e = self.create_cpt_node(net, "Economy", "State of the economy",
["Up","Flat","Down"], 160, 40)

s = self.create_cpt_node(net,"Success", "Success of the venture",
["Success","Failure"],60, 40)

f = self.create_cpt_node(net, "Forecast", "Expert forecast",
["Good","Moderate","Poor"], 110, 140)
net.add_arc(e, s)
net.add_arc(s, f)

# we can also use node identifiers when creating arcs
net.add_arc("Economy", "Forecast");

economyDef = [0.2, # P(Economy=U)
0.7, # P(Economy=F)
0.1 # P(Economy=D)
]
net.set_node_definition(e, economyDef)

successDef = [0.3, # P(Success=S|Economy=U)
0.7, # P(Success=F|Economy=U)
0.2, # P(Success=S|Economy=F)
0.8, # P(Success=F|Economy=F)
0.1, # P(Success=S|Economy=D)
0.9 # P(Success=F|Economy=D)
]
net.set_node_definition(s, successDef)

forecastDef = [
0.70, # P(Forecast=G|Success=S,Economy=U)
0.29, # P(Forecast=M|Success=S,Economy=U)
0.01, # P(Forecast=P|Success=S,Economy=U)

0.65, # P(Forecast=G|Success=S,Economy=F)
0.30, # P(Forecast=M|Success=S,Economy=F)
0.05, # P(Forecast=P|Success=S,Economy=F)

0.60, # P(Forecast=G|Success=S,Economy=D)
0.30, # P(Forecast=M|Success=S,Economy=D)
0.10, # P(Forecast=P|Success=S,Economy=D)

0.15, # P(Forecast=G|Success=F,Economy=U)
0.30, # P(Forecast=M|Success=F,Economy=U)
0.55, # P(Forecast=P|Success=F,Economy=U)

0.10, # P(Forecast=G|Success=F,Economy=F)
0.30, # P(Forecast=M|Success=F,Economy=F)
0.60, # P(Forecast=P|Success=F,Economy=F)

0.05, # P(Forecast=G|Success=F,Economy=D)
0.25, # P(Forecast=G|Success=F,Economy=D)
0.70 # P(Forecast=G|Success=F,Economy=D)
]
net.set_node_definition(f, forecastDef)

net.write_file("tutorial1.xdsl")

print("Tutorial1 complete: Network written to tutorial1.xdsl")

def create_cpt_node(slef, net, id, name, outcomes, x_pos, y_pos):
handle = net.add_node(pysmile.NodeType.CPT, id)

net.set_node_name(handle, name)
net.set_node_position(handle, x_pos, y_pos, 85, 55)

initial_outcome_count = net.get_outcome_count(handle)

for i in range(0, initial_outcome_count):
net.set_outcome_id(handle, i, outcomes)

for i in range(initial_outcome_count, len(outcomes)):
net.add_outcome(handle, outcomes)

return handle

Tutorial1()

net.read_file('Tutorial1')

***ERROR BELOW***
NameError Traceback (most recent call last)
Cell In[5], line 1
----> 1 net.read_file('Tutorial1')

NameError: name 'net' is not defined

This is on MAC.

[shooltz[BayesFusion]]

You're trying to reference the local variable defined in the __init__ function. If you want to load the model created by Tutorial1, just crate another instance of pysmile.Network class.

BTW, net.read_file should use the full filename of your .xdsl file, like "Tutorial1.xdsl", not just "Tutorial1"