I meant is there value in having exactly Python’s f-style formatting, nothing more, nothing less? E.g. if someone is porting code. [In general, this could apply to other Python stuff; e.g. I know / has Python 3 semantics…]
And I probably meant then to have f-strings in Base. [Can you reserve f in Base for a future package? Would it not disallow adding that and any package trying to implement the strings later. I guess you can “reserve” informally in docs…]
Was your plan to implement f"…" then somebody else might do it (differently) and it depends on “using”?
[I guess I had https://github.com/JuliaIO/Formatting.jl “Python-style Types and Functions” in mind, as one package, but it’s 3 years old, and PEP 498/Python 3.6 is brand new.]
I guess your package can implement more e.g. C"…" and Swift"…" and/or utility-functions.