Selection dropdown to list using python

[Mohamad_Kayali]

Hi,
i need to have a list of all element subtypes like the ones in (Element Types) node:

i need to do that in python.
Where can i find the codes of Dynamo builtin nodes?

[staylor]

You can use the Document.ElementTypes node from Clockwork. If you use this in conjunction with the UI Data Shapes nodes, you can have the script provide a user input checkbox selection list.

[Mohamad_Kayali]

Thank you Staylor!