[Python-Dev] other "magic strings" issues

Barry Warsaw barry at python.org
Fri Nov 7 13:44:23 EST 2003

On Fri, 2003-11-07 at 12:35, Guido van Rossum wrote:

> Hm, I'd forgotten about ascii_letters.  It would make a beautiful
> class attribute of str.
> I *do* think that we don't need string.letters -- the only use for it
> I've seen is checking if a character is in that string, and
> c.isletter() is faster.

Ah gotcha.  I'd definitely want to retain ascii_letters, probably
ascii_lowercase and ascii_uppercase, digits, hexdigits, octdigits,
punctuation, printable, and whitespace.  I'm not sure about the locale
specific constants, but maybe we do something like:


I'd definitely want to make these all read-only, e.g. removing the
undefined warnings for string.lowercase.


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