The default behavior certainly isn't particularly intuitive, and I've
encountered the same thing you have. Personally, I would expect the context
manager to return you to whatever node context you were in previously on
exit, rather than using any hard-coded logic like "up a level" or "to the
root" (though in your case, the root would be correct).
In general, I tend to use a separate (simple) context manager that returns
to the correct node context after the new one exits. Looking through my mail
archives, I don't think I've sent in a support email about this, but I'll do
so now.
-Nathan
From: Nico Dufort
Sent: Tuesday, June 03, 2014 10:56 AM
To: Nuke Python discussion
Subject: [Nuke-python] Using "with" on nested nodes
Good day everyone,
I have stumbled upon a problem that I was not expecting: when I use the with
statement on a hierarchy of nodes (e.g. Group1.Group2.Group3), once I leave
it, instead of falling back to the root level of the comp (or wherever I
would be), I find myself in the node immediately above the last one (Group2
in this case)
I am ready to believe that I misunderstand the with statement, but for some
reason, I assumed that if I am using it at root level of the DAG, the next
statement outside the with would be run at that root level, not an
intermediary level. It feels as if doing a with on a chain of nodes is like
doing three with's in a row (nested) so that when I leave the lowest node, I
fall back into the node right above.
Can anyone confirm that's normal behavior or a problem? I can work around
it, but with was just so practical at first...
#In case formatting does not hold, the first print is indented, the second
one is outside the with.
with nuke.toNode('Group1.Group2.Group3'):
print nuke.allNodes() # Group3 nodes
print nuke.thisNode().name(), nuke.allNodes() # this will print Group2
instead of root.
Setup:
set cut_paste_input [stack 0]
version 7.0 v9
push $cut_paste_input
Group {
name Group1
selected true
xpos -419
ypos -147
}
Input {
inputs 0
name Input1
xpos -419
ypos -187
}
NoOp {
name NoOp1
xpos -419
ypos -147
}
Output {
name Output1
xpos -419
ypos -47
}
Group {
inputs 0
name Group2
selected true
xpos -244
ypos -122
}
Input {
inputs 0
name Input2
xpos -419
ypos -187
}
NoOp {
name NoOp2
xpos -419
ypos -147
}
Output {
name Output2
xpos -419
ypos -47
}
Group {
inputs 0
name Group3
selected true
xpos -72
ypos -139
}
Input {
inputs 0
name Input3
xpos -419
ypos -187
}
NoOp {
name NoOp3
xpos -419
ypos -147
}
Output {
name Output3
xpos -419
ypos -47
}
end_group
end_group
end_group
--
"Attention, attention. Here and now, boys," the mynah repeated. "Here and
now, boys."
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