On Fri, Sep 18, 2015 at 4:49 AM, Ian Kelly <ian.g.ke...@gmail.com> wrote: > On Thu, Sep 17, 2015 at 1:06 AM, Jussi Piitulainen > <harvesting@makes.email.invalid> wrote: >> Ordinary binary operators not only combine things of the same type, they >> also produce a thing of that same type. So 'in' does not fit among them >> either. >> >> I feel it's _more_ at home among comparison operators. (Hm. That's >> 'operator' in a different sense.) > > Comparison operators *are* binary operators. All that "binary" means > is that it takes two arguments.
I think what Jussi is saying is that int+int yields int, and float*float yields float, and so on - but even that is true only of the arithmetic operators, and not all of them (int/int -> float in Py3). But generalizing from "arithmetic operators" to "ordinary operators" is a little unfair, unless you assume that the sole purpose of programming is to represent algebra. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
