Benji York schrieb:
> Joachim König wrote:
>> could someone enlighten me why
>>
>> {,}
>>
>> can't be used for the empty set, analogous to the empty tuple (,)?
>
> Partially because (,) is not the empty tuple, () is.
Oh, yes, of course. I was thinking of (x) vs. (x,), and that the comma
after the last element is optional if len() > 1, but required when len()
== 1
and forgot that is is forbidden when len() == 0.
Sorry about that.
Joachim
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