[Python-Dev] functools additions (original) (raw)

SevenInchBread adamadamadamamiadam at gmail.com
Mon Apr 16 00🔞16 CEST 2007

Do you have commit access? What's your real name? I prefer to remain pseudonymous, and I don't have commit access.

Yeah... they're not terribly useful - more or less there for the sake of being there. Batteries included and all that

...but now I've got a more useful idea for a function wrapper around predicate functions to make them a little more functionally inclined. Something like.......

@predicate def hasnext(x): return hasattr(x, "next")

@predicate def hasiter(x): return hasattr(x, "iter")

isiterable = hasnext or hasiter #or/and/not operators construct new predicate functions

isEmptyIterable = isiterable and not predicate(bool)

isgenerator = isiterable and (lambda x: hasattr(x, "send") and hasattr(x, "throw"))

filter(isgenerator or callable, SomeSequence)

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