Steven D'Aprano <steve+pyt...@pearwood.info> added the comment:
I don't know... To my mind, if we are going to support working with primes, the minimum API is: - is_prime(n) - next_prime(n) - prev_prime(n) - factorise(n) - generate_primes(start=0) (I trust the names are self-explanatory.) There are various other interesting prime-related factors which can be built on top of those, but the above five are, in my opinion, a minimal useful set. Factorising negative numbers is simple: just include a factor of -1 with the prime factors. We would probably want to also support factorising 0 and 1 even though they don't have prime factors. The alternative is to raise an exception, which I expect would be more annoying than useful. ---------- nosy: +steven.daprano _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue40028> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
