mario ruggier wrote: > It may sometimes be useful to make use of the conceptual > difference between these two cases, that is that in one case the > user did not specify any key and in the other the user explicitly > specified the key to be None.
Do you have an example where this might be useful? > Is there any way to tell this difference from within the called > function? And if so, would there be any strong reasons to not rely > on this difference? IMHO, it's "magic". > Would it be maybe a little abusive of what a keyword arg actually > is? No, but you'd have to explain to users why it behaves like this. I wouldn't expect this behaviour. If the function signature says the default value for "key" is None, I expect it to behave the same no matter if I leave out "key" or if I set it explicitly. Regards, Björn -- BOFH excuse #307: emissions from GSM-phones -- http://mail.python.org/mailman/listinfo/python-list
