(Bug): Python can't test oneNode == another node

[bonalex01dev]

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• [X] I'm using the latest version of Natron (not required but recommended)
• [X] I've restarted Natron and the issue persists
• [X] I've run Natron via the command line and the issue persists
• [X] I've followed the contributing guidelines to the best of my understanding
• [X] My issue is not on the issue tracker or in a pull request already (go search for it and dig around a little bit!)
• [X] This bug is reproducible

Natron version

natron 2.4.1

Operating system

win10

System specs

32gb i7 rtx2070

Did you install Natron using the official installer?

• [X] Yes, I used the official installer
• [x] No, I installed from a binary archive
• [x] No, I compiled Natron from sources
• [x] No, I installed Natron via another method

Custom installation path

No response

What were you trying to do?

in Python compare if 2 nodes stored in variables point to the same node.

What did you expect to happen? What happened instead?

I expect that if I get an Effect object by predeclared variable, from selection, from group.getChildren. I could compare like this if effect1var == effect2var

But it always return false

I can use workaround to compare Labels or ScriptNames. But this is cumbersome especially for nodes nested in groups. Plus a node list stored becomes obsolete if the user renames any node.

Is it the intended behavior ? Can you think of any workaround

Step-by-step reproduction instructions

create node named "node2"

mn = app1.getNode('node2') print mn.getScriptName() sel = app1.node2 print mn.getScriptName() print mn == sel

result is node2 node2 False

I expected yhe test would return True

Additional details

I'm working on a "paste nodes" scripts that will allow the pasted nodes to be automatically inserted in the node tree. It's the default behavior in that "other compositing software" and is darn handy :-)

By the way I made a new PR in the community scripts if someone can check it...

[devernay]

This could be fixed (to be checked) when we switch to Qt5, thanks to the fix made for https://bugreports.qt.io/browse/PYSIDE-74 in PySide 5.15.1:

• [PYSIDE-74] Implement default __ne__ and __eq__ for all PySide types

[bonalex01dev]

Oh nice! If I get you right and want to be ready for the future: I should implement an is_equal(effect1, effect2) function that actually compare the effects scriptnames and check if the parent group is the same... later replaced by "==" Oh by the way, I can't find a function to get the group of a node... and I can't test if node1 is in group.getChildren() because of the bug we are discussing here. Am I right ?

Anyway thanks for your reply, and good to see you back here :-)

[devernay]

I think implementing is_equal() as you suggest is a good fix (and will continue working even when we have ==) Please paste the implementation here.

[bonalex01dev]

Any hint about how to determine the parent group of a node ? If we don't have this, should we create a "unique ID" hidden parameter for each node ? Even a "parent name" parameter would fall back on the same issue ...