In article <[EMAIL PROTECTED]>, Bruno Desthuilliers <[EMAIL PROTECTED]> wrote:
> David C. Ullrich a écrit : > > In article <[EMAIL PROTECTED]>, > > Bruno Desthuilliers <[EMAIL PROTECTED]> > > wrote: > > > >> David C. Ullrich a écrit : > (snip) > >>> Seems to me that people often site the "important warning" in > >>> the tutorial. Of course there's no reason anyone would bother > >>> going through the tutorial > >> Indeed. No reason at all. > >> > >>> - just for fun I looked in the > >>> official Python Reference Manual to see whether they're explicit > >>> about this or require the reader to figure it out from something > >>> else they say. > >>> > >>> There's a section titled "7.6 Function definitions". About halfway > >>> through that section there's a _bold face_ statement > >>> "Default parameter values are evaluated when the function definition is > >>> executed.", followed by an explanation of how that can lead to > >>> the sort of problem above. > >> But there's no reason to read the reference manual neither. > >> > >>> So I guess it _is_ awfully dangerous. They > > Hum... Who are "they", exactly ? > > >>> should really explain > >>> this aspect of the language's behavior to people who don't read > >>> the formal definition and also don't work through the tutorial. > >> You mean : "to people that don't bother reading the FineManual *nor* > >> searching the newsgroup / ML archives ?" > > > > Yes. Also add "don't read any books". > > Indeed. > > > I think I started with some > > book > > As far as I'm concerned, I started with the FineManual(tm)'s tutorial. > > (snip) > > >> Well... How to say.. Is there any chance these people will read anything > >> *at all* ? > > > > No. That's exactly the point! > > Yeps. But I don't think we derive the same conclusions from that point. Erm, I think maybe your irony detector needs a little calibration... > > [...] > > > In particular default parameters should work the way the user > > expects! The fact that different users will expect different > > things here is no excuse... I was worried someone might not realize I was being sarcastic, which is why I threw in this obvious impossibility > If different users expect different - mostly incompatible - things, how > would it be possible to have it working "the way the user expect" ? but I guess it wasn't enough. > Should Python grow some telepathic features to guess the user's > expectations and modifies itself to meet these expectations ?-) -- David C. Ullrich
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