[Python-ideas] PEP 532: A circuit breaking operator and protocol

[Adam Bartoš]

Just a small suggestion:

wouldn't it be better to use adjectives instead of verbs for proposed
builtin names and their variants?

existing(foo) else bar
non_None(foo) else bar

instead of

exists(foo) else bar
is_not_None(foo) else bar

Regards,
Adam Bartoš
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