How we can see all loaded family (list of family names) in revit project (using python code probably) ?
No need for python, that’s actually a rarity.
To simply get all families is rather difficult, by level is rather easy, worst case: Get several
Levels nodes and join them in a list.
Element Types (set to Family) and All Elements of Type.
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@Andreas_Dieckmann is right, this works just as well.
I actually never knew you could do that with Element Types, I always thought it was meant to find Family Types 
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@PauLtus and @Andreas_Dieckmann this cool decision ! )
Thanks you !
p.s my problem was solved , but if anybody show me how its do inside python - its will good too (but its not so important ) 
)
Any note is available for to get the list of all family in the document.
Start new thread. This post is already solved.