[Python-Dev] transitioning from % to {} formatting (original) (raw)

Vinay Sajip vinay_sajip at yahoo.co.uk
Sun Oct 4 00:29:34 CEST 2009

Nick Coghlan <ncoghlan gmail.com> writes:

I'm starting to think that a converter between the two format mini-languages may be the way to go though.

fmtbraces is meant to provide a superset of the capabilites of fmtpercent, so a forward converter shouldn't be too hard. A reverse converter may have to punt with ValueError when it finds things that cannot be expressed in the fmtpercent mini language though.

I've done a first cut of a forward (% -> {}) converter:

http://gist.github.com/200936

but I'm not sure there's a case for a converter in the reverse direction, if we're encouraging movement in one particular direction.

Regards,

Vinay Sajip

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