[Python-Dev] sWAPcASE Was: transform() and untransform() methods, and the codec registry
eric at trueblade.com
Fri Dec 10 00:10:38 CET 2010
On 12/9/2010 5:54 PM, Raymond Hettinger wrote:
> It would make me happy if we could agree to kill or at least mortally wound
> str.swapcase(). I did some research on what it is go for and found
> that it is a vestige of an old word processor command to handle
> the case where a user accidentally left the caps lock key turned-on.
> AFAICT using Google's code search, it has nearly zero value for
> Python scripts. It does have a cost however, the code search turned-up
> many cases where people were writing string like objects and included
> swapcase() just so they could match the built-in API.
> It's time for swapcase() to go the way of the dinosaurs.
+1, assuming the normal deprecation process.
If we're looking to reduce the number of methods on str, I wouldn't mind
seeing center() and zfill() also go away, since they're trivially
replaced by format().
>>> format('3', '>010')
' 3 '
>>> format('3', '^10')
' 3 '
>>> '3'.center(10, '-')
>>> format('3', '-^10')
Although I'll grant this the case for the demise of center() and zfill()
isn't as strong as for swapcase(). It's truly useless.
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