constants

Jay O'Connor joconnor at cybermesa.com
Sun Aug 25 22:05:01 CEST 2002


On Mon, 26 Aug 2002 01:49:30 +0700, David Garamond
<davegaramond at icqmail.com> wrote:

>does python support some sort of constant variables?
>
>in ruby, variables that begin with an uppercase letter is considered a 
>constant. that is, once bound to a value, nobody can rebind it until the 
>end of program execution (though it certainly does not prevent the bound 
>object value to be changed):
>
>$ irb
>irb(main):001:0> A=1
>irb(main):002:0> A=2
>(irb):2: warning: already initialized constant A
>irb(main):003:0> B=[1,2,3]
>irb(main):006:0> B[1]=3
>irb(main):007:0> B
>[1, 3, 3]


Here's a liink to a recipe describing a technique for enforcing
constants in Python

http://www.onlamp.com/pub/a/python/2002/07/11/recipes.html

Jay O'Connor
joconnor at cybermesa.com
http://www.cybermesa.com/~joconnor


"God himself plays on the bass strings first, when he tunes the soul"



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