At 01:00 AM 9/18/2006, Alan Gauld wrote: > >> 1. in your roundNumber function, you define a function > >> incrementDigit. > >> I'm pretty sure that this function is destroyed and recreated > >> every time > >> you call the function roundNumber. > > I don't understand. What's another way? > >def f(): > def g(): return 42 > return g() > >def g(): return 42 >def f() return g() > >The two bits of code do the same thing but the first >constructs/deletes g() each time.
Hm. That's what I get for knowing little computer science. > > And what's the downside of the way I've done it? > >Its slow... Doesn't seem slow to me. But I take your point. > > How do you keep from causing all that destruction and recreation? > >See above > > > And what's bad about it? > >Its slow > >But sometimes defining a function inside another function is >what you want, because you need to limit visibility, or it needs >to access variables that are local to the outer function. >But unless you have a very clear idea of why you want to >define a nested function its better to make them global. > > > No, I'll take your advice. But I hate to type underscores, > > so is there another style I could use for functions that > > would be different from the aRandomVariable style I > > like for variables? > >Personally I don't differentiate variables and functions >in Python (partly because Python doesn't - they are >all just names) mainly because functions are usually >obvious by dint of the parentheses used to call them. > > > Function Names > > > > Function names should be lowercase, with words separated by > > underscores as necessary to improve readability. > >It may be the official style but in practice its not that widely >followed. > > > So I guess I should start learning to type underscores accurately. > >Me too, I guess :-) Thanks, Alan. Dick _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
