On Mon, May 2, 2022, at 7:03 AM, Chris Angelico wrote: > The "alternate alphabet" case can be done by base converting and then > replacing on the string. It's not the smoothest, so that counts a bit > of clunkiness; but it's also not all THAT common (I can recall doing > it for SteamGuard 2FA codes, which are base 26 but avoid confusable > digit/letter pairs, and that's about it).
I've mostly resorted to using str.maketrans and .replace as well. > When you say "other bases", do you mean beyond base 36? Do you have > use-cases for anything >36 that isn't 64, 85, or 256? If so, how do > you currently do this? Some examples I've encountered over the past year are: Base58, as used in Bitcoin [1]. Base45 [2], and Base91. My experience is likely skewed as I do take part in CTFs where obscureness is often part of the deal. > The CPython integer type is implemented in C for performance. If > that's not a consideration, maybe this would be better done in the > base64 module (which is where base 85 also lives), as a general tool > for arbitrary ASCIIfication. For my usecases it hasn't been especially performance critical. The base64 module might be a good place for this to live instead of the integer type. Perhaps the base64 module is in fact a better place as converting to bytes is likely what's wanted instead of going to/from integer first. > Can you link to your codebase where you 'often' do these kinds of > conversions? Is it in a performance-critical area? I can't but it hasn't been performance critical. Regards, Simon https://tools.ietf.org/id/draft-msporny-base58-01.html [1] https://datatracker.ietf.org/doc/draft-faltstrom-base45/ [2] _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/BT3VJ5F4CEH74Q6GSD7XX3LUF6VITVPR/ Code of Conduct: http://python.org/psf/codeofconduct/
