Automatically/Dynamically listing new variable input parameters in GHPython component

Forgive my foray into the depths of GH programming, I'm a little lost:

I'm trying to enable a python component to automatically read newly inserted input parameters, following on from this discussion:

http://www.grasshopper3d.com/forum/topics/variable-input-parameters...

This is all new to me however as I've never worked with the GH SDK itself... When I try to list out the items in enumerate(ghenv.Component.Params.Input), I get GH objects rather than the data itself (eg <Grasshopper.Kernel.Types.GH_String object ... >)

Can someone guide a newbie through this?

Thanks!

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Replies to This Discussion

Permalink Reply by djordje on May 1, 2015 at 3:51am

Hi Daniel,

What your "out" output parameter shows is a print of "Attributes" list of lists. It does not output the content of "Attributes" list of lists.
If you have assigned the "Attributes" to some output parameter (say b = Attributes), you would get the following:

IronPython.Runtime.List
IronPython.Runtime.List
IronPython.Runtime.List
IronPython.Runtime.List

That's because grasshopper does not support python's list of list (or any other subarray type).

So the way to overcome this is to create a data tree, where each its branch will contain one of python's upper sublists. Which is what has been done in the .gh file you opened.
Hope this makes sense. If not, let me know.

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