[issue35338] set union/intersection/difference could accept zero arguments

[Rémi Lapeyre]

Rémi Lapeyre <remi.lapeyre at henki.fr> added the comment:

The intersection of an empty set of sets is either the empty set or the universe sets so if set.union() is defined to support set.union(*sequence), wouldn't it be less surprising for set.intersection() to return the empty set too?

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nosy: +remi.lapeyre

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35338>
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