It's impossible to hook into Python's string interpolation system to the degree required for the first to work. JS and Julia can do it, e.g. in JS (with typescr

It's impossible to hook into Python's string interpolation system to the degree required for the first to work. JS and Julia can do it, e.g. in JS (with typescript annotations) it'd just be a matter of defining function Q(stringBits: string[]): Query { for (bit in stringBits) { if (bit is string) { add to sql } else if (bit is Query) { add bit to dependencies add bit.name to sql } } } But this cannot be done currently in Python (see PEP-501), so I'm forcing the user to pass a lambda, which I can get the AST of, with which I can implement the machinery to do the above. Suggestions for improvements are welcome!