Not sure I completely understand what you’re trying to achieve, but this might be one way to do it:
julia> nn=[:(at=at), :(ct=ct)]
2-element Vector{Expr}:
:(at = at)
:(ct = ct)
julia> :($(nn...),)
:((at = at, ct = ct))
But may I ask what the broader context is? Why do you need to build such expressions?
PS: Welcome to the Julia discourse! Please post quoted code, instead of screenshots; this makes it easier for us to help you
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