For review: PEP 308 - If-then-else expression

[Andrew Koenig]

Paul> I'd say every time I write code with regexps, I want an assignment
Paul> expression like

Paul>    while (m := re.match(exp, something)): ...

Paul> so if I could add just one construct, assignment expressions or
Paul> conditional expressions, I'd probably take assignment
Paul> expressions even though they don't do as much from a functional
Paul> programming point of view.

Meanwhile, you can do this:

        def update(x, y):
                x[0] = y
                return y
        m = [None]
        while (update(m, re.match(exp, something))): ...

       
-- 
Andrew Koenig, ark at research.att.com, http://www.research.att.com/info/ark