On Fri, Jul 24, 2015 at 11:57 AM, Bruce Leban <bruce@leban.us> wrote:
You talk about which happens "first" so let's recast this as an operator precedence question. Think of f as a unary operator. Does f bind tighter than implicit concatenation? Well, all other string operators like this bind more tightly than concatenation. f'{spam}' '{eggs}'
Thing is, though, it isn't an operator, any more than list display is an operator. Operators take values and result in values. You can break out some part of an expression and it'll have the same result (apart from short-circuit evaluation). With f"...", it's a piece of special syntax, not something you apply to a string. You can't do this: fmt = "Hello, {place}!" place = "world" print(f fmt) If f were an operator, with precedence, then this would work. But it doesn't, for the same reason that this doesn't work: path = "C:\users\nobody" fixed_path = r path These are pieces of syntax, and syntax is at a level prior to all considerations of operator precedence. ChrisA