[Houdini][Python] Get the current opened context?


I have this code that creates new node:
new_node = hou.node('/obj').createNode('node_name')

Is there a way to retrieve the current opened context so that this part changes depending on the opened context?

Are you looking for hou.pwd()?

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Thanks for the response @BigRoyNL
but it somehow always returns the topmost context.

For example, whether I am at hou.node('/obj') or at hou.node('/obj/geo1')
it always gives me a the following hou.node
<hou.Node at />

Am I missing something?

How do you mean - where you are ‘currently’ at?

When calling hou.pwd() from e.g. a node callback that’s when it returns the current node as that is the node executing the logic. For example you could use it within a Python SOP node. (which I think it actually also does by default when creating a node).

Getting the current “context” from the UI however is slightly more involved. This is due to how you can e.g. have multiple network views open that each point to a different context. Which one would you want? :slight_smile:

Where and when are you trying to retrieve the current context? And what would your expected result be?

Ah gotcha. I’m not using a Python SOP node.

My use case is creating a custom PySide UI with buttons for my commonly modified nodes.
When I click the buttons, it creates a node on the currently opened context.

For testing, I’m using the Python Shell which unfortunately gives me the <hou.Node at /> result.

You could try and get the active pane in Houdini in a multitude of ways. Potentially hou.Desktop.paneTabUnderCursor or hou.Desktop.paneUnderCursor could help?

Once you have the right pane and it is a PathBasePaneTab or alike you can do pane.pwd().

Does this point you into the right direction?

Basically you’d need to get explicit as to which specific UI element of Houdini you want to take the current context from - since you might have multiple.

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Thanks for the response.

This will sound stupid for asking this, so sorry in advance. But I can’t use the paneTabUnderCursor or paneUnderCursor.

It gives me an error of
missing 1 required positional argument: 'self'

I checked the documentation and it does not accept arguments. I’m guessing self here needs to be implemented in a Class.

I tried that too like literraly
print (hou.Desktop.paneUnderCursor(self))

but it gives me another error of
TypeError: in method 'Desktop_paneUnderCursor', argument 1 of type 'HOM_Desktop *'

It’s a method on a class. The Desktop class should first be instantiated as an instance - that’s why you are getting the error.

What that means in this case is that you will need to get the active desktop first with hou.ui.curDesktop

desktop = hou.ui.curDesktop()

There might also be multiple active desktops apparently, see hou.ui.desktops.

I’m not behind a machine with Houdini currently - so not entirely sure this is the way to use it.

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Ah gotcha. Thanks for sticking through me.
It now works as expected :slight_smile:

Here’s the code I used for reference:

desktop = hou.ui.curDesktop()
pane =  desktop.paneTabUnderCursor()
current_context = pane.pwd()