On Sat, Nov 21, 2015 at 7:38 PM, Todd <toddr...@gmail.com> wrote: > Rather than a dedicated syntax, might this be something that could be > handled by a built-in decorator? > > Maybe something like: > > @late_binding > def myfunc(x, y=[]):
No, it can't; by the time the decorator runs, the expression has already been evaluated. Without syntax, this can only be done with gross hacks like lambda functions. It could be done thus: @late_binding def myfunc(x, y=lambda: []): and then the decorator could wrap the function. I'm not entirely sure I could implement it reliably, but even leaving that aside, having to put "lambda:" in front of everything is pretty ugly. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
