I switch back and forth between format and %, and never use locals in the format. It's annoying, every time a string is written, to try to decide which way is b

I switch back and forth between format and %, and never use locals in the format. It's annoying, every time a string is written, to try to decide which way is better for this instance. That said, is there a way to do ('%.3f' % x) with this?