Peter Hansen wrote: > [EMAIL PROTECTED] wrote: > > Peter Hansen wrote: > > > >>But why would anyone want to create numeric literals for credit card > >>numbers? > >> > > May be for space saving ? But storage space being so cheap, this is not > > a very good reason, but still a reason. > > Space saving where? Why would you have any credit card numbers stored > in any application? Even a credit card company isn't going to write > code that has the numbers stored as *literals*! I am not the one asking for it, only guessing the reason and credit card company does save it in the database. So saving as half byte numeric(or 64 bit integer) does save a bit of space comparing with string.
> > There's only one place I can think of right now where you might want > that: in automated tests for code that processes credit card numbers. > And you definitely do not need to "save space" in that situation... > That usually don't need it as one big number but usually more easier to code if treating as string(like checksum), something like: for digits in cc: checksum += int(digits) -- http://mail.python.org/mailman/listinfo/python-list
